diff --git a/examples/companion_radio/MyMesh.cpp b/examples/companion_radio/MyMesh.cpp
index 9bb747e79..967160915 100644
--- a/examples/companion_radio/MyMesh.cpp
+++ b/examples/companion_radio/MyMesh.cpp
@@ -838,7 +838,7 @@ void MyMesh::begin(bool has_display) {
   _prefs.bw = constrain(_prefs.bw, 7.8f, 500.0f);
   _prefs.sf = constrain(_prefs.sf, 5, 12);
   _prefs.cr = constrain(_prefs.cr, 5, 8);
-  _prefs.tx_power_dbm = constrain(_prefs.tx_power_dbm, 1, MAX_LORA_TX_POWER);
+  _prefs.tx_power_dbm = constrain(_prefs.tx_power_dbm, -9, MAX_LORA_TX_POWER);
   _prefs.gps_enabled = constrain(_prefs.gps_enabled, 0, 1);  // Ensure boolean 0 or 1
   _prefs.gps_interval = constrain(_prefs.gps_interval, 0, 86400);  // Max 24 hours
 
@@ -1228,10 +1228,11 @@ void MyMesh::handleCmdFrame(size_t len) {
       writeErrFrame(ERR_CODE_ILLEGAL_ARG);
     }
   } else if (cmd_frame[0] == CMD_SET_RADIO_TX_POWER) {
-    if (cmd_frame[1] > MAX_LORA_TX_POWER) {
+    int8_t power = (int8_t)cmd_frame[1];
+    if (power < -9 || power > MAX_LORA_TX_POWER) {
       writeErrFrame(ERR_CODE_ILLEGAL_ARG);
     } else {
-      _prefs.tx_power_dbm = cmd_frame[1];
+      _prefs.tx_power_dbm = power;
       savePrefs();
       radio_set_tx_power(_prefs.tx_power_dbm);
       writeOKFrame();
diff --git a/examples/companion_radio/NodePrefs.h b/examples/companion_radio/NodePrefs.h
index 62cd41642..d7ddd92a5 100644
--- a/examples/companion_radio/NodePrefs.h
+++ b/examples/companion_radio/NodePrefs.h
@@ -17,7 +17,7 @@ struct NodePrefs {  // persisted to file
   uint8_t multi_acks;
   uint8_t manual_add_contacts;
   float bw;
-  uint8_t tx_power_dbm;
+  int8_t tx_power_dbm;
   uint8_t telemetry_mode_base;
   uint8_t telemetry_mode_loc;
   uint8_t telemetry_mode_env;
diff --git a/examples/simple_repeater/MyMesh.cpp b/examples/simple_repeater/MyMesh.cpp
index 6d957cc09..8220ef0db 100644
--- a/examples/simple_repeater/MyMesh.cpp
+++ b/examples/simple_repeater/MyMesh.cpp
@@ -899,7 +899,7 @@ void MyMesh::dumpLogFile() {
   }
 }
 
-void MyMesh::setTxPower(uint8_t power_dbm) {
+void MyMesh::setTxPower(int8_t power_dbm) {
   radio_set_tx_power(power_dbm);
 }
 
diff --git a/examples/simple_repeater/MyMesh.h b/examples/simple_repeater/MyMesh.h
index 0d5cd28a3..7a51b4a97 100644
--- a/examples/simple_repeater/MyMesh.h
+++ b/examples/simple_repeater/MyMesh.h
@@ -198,7 +198,7 @@ class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
   }
 
   void dumpLogFile() override;
-  void setTxPower(uint8_t power_dbm) override;
+  void setTxPower(int8_t power_dbm) override;
   void formatNeighborsReply(char *reply) override;
   void removeNeighbor(const uint8_t* pubkey, int key_len) override;
   void formatStatsReply(char *reply) override;
diff --git a/examples/simple_room_server/MyMesh.cpp b/examples/simple_room_server/MyMesh.cpp
index 22a3d208b..598b14de6 100644
--- a/examples/simple_room_server/MyMesh.cpp
+++ b/examples/simple_room_server/MyMesh.cpp
@@ -719,7 +719,7 @@ void MyMesh::dumpLogFile() {
   }
 }
 
-void MyMesh::setTxPower(uint8_t power_dbm) {
+void MyMesh::setTxPower(int8_t power_dbm) {
   radio_set_tx_power(power_dbm);
 }
 
diff --git a/examples/simple_room_server/MyMesh.h b/examples/simple_room_server/MyMesh.h
index f470e55eb..b4529e776 100644
--- a/examples/simple_room_server/MyMesh.h
+++ b/examples/simple_room_server/MyMesh.h
@@ -188,7 +188,7 @@ class MyMesh : public mesh::Mesh, public CommonCLICallbacks {
   }
 
   void dumpLogFile() override;
-  void setTxPower(uint8_t power_dbm) override;
+  void setTxPower(int8_t power_dbm) override;
 
   void formatNeighborsReply(char *reply) override {
     strcpy(reply, "not supported");
diff --git a/examples/simple_secure_chat/main.cpp b/examples/simple_secure_chat/main.cpp
index 018ec2a20..a389ec74b 100644
--- a/examples/simple_secure_chat/main.cpp
+++ b/examples/simple_secure_chat/main.cpp
@@ -66,7 +66,7 @@ struct NodePrefs {  // persisted to file
   char node_name[32];
   double node_lat, node_lon;
   float freq;
-  uint8_t tx_power_dbm;
+  int8_t tx_power_dbm;
   uint8_t unused[3];
 };
 
@@ -290,7 +290,7 @@ class MyMesh : public BaseChatMesh, ContactVisitor {
   }
 
   float getFreqPref() const { return _prefs.freq; }
-  uint8_t getTxPowerPref() const { return _prefs.tx_power_dbm; }
+  int8_t getTxPowerPref() const { return _prefs.tx_power_dbm; }
 
   void begin(FILESYSTEM& fs) {
     _fs = &fs;
diff --git a/examples/simple_sensor/SensorMesh.cpp b/examples/simple_sensor/SensorMesh.cpp
index 8e27323ed..f05fb245c 100644
--- a/examples/simple_sensor/SensorMesh.cpp
+++ b/examples/simple_sensor/SensorMesh.cpp
@@ -815,7 +815,7 @@ void SensorMesh::updateFloodAdvertTimer() {
   }
 }
 
-void SensorMesh::setTxPower(uint8_t power_dbm) {
+void SensorMesh::setTxPower(int8_t power_dbm) {
   radio_set_tx_power(power_dbm);
 }
 
diff --git a/examples/simple_sensor/SensorMesh.h b/examples/simple_sensor/SensorMesh.h
index ed3523458..4bc0d784e 100644
--- a/examples/simple_sensor/SensorMesh.h
+++ b/examples/simple_sensor/SensorMesh.h
@@ -66,7 +66,7 @@ class SensorMesh : public mesh::Mesh, public CommonCLICallbacks {
   void setLoggingOn(bool enable) override {  }
   void eraseLogFile() override { }
   void dumpLogFile() override { }
-  void setTxPower(uint8_t power_dbm) override;
+  void setTxPower(int8_t power_dbm) override;
   void formatNeighborsReply(char *reply) override {
     strcpy(reply, "not supported");
   }
diff --git a/src/helpers/CommonCLI.cpp b/src/helpers/CommonCLI.cpp
index 10ab86691..6dcf7018e 100644
--- a/src/helpers/CommonCLI.cpp
+++ b/src/helpers/CommonCLI.cpp
@@ -92,7 +92,7 @@ void CommonCLI::loadPrefsInt(FILESYSTEM* fs, const char* filename) {
     _prefs->bw = constrain(_prefs->bw, 7.8f, 500.0f);
     _prefs->sf = constrain(_prefs->sf, 5, 12);
     _prefs->cr = constrain(_prefs->cr, 5, 8);
-    _prefs->tx_power_dbm = constrain(_prefs->tx_power_dbm, 1, 30);
+    _prefs->tx_power_dbm = constrain(_prefs->tx_power_dbm, -9, 30);
     _prefs->multi_acks = constrain(_prefs->multi_acks, 0, 1);
     _prefs->adc_multiplier = constrain(_prefs->adc_multiplier, 0.0f, 10.0f);
 
@@ -326,7 +326,7 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
         }
         *reply = 0;  // set null terminator
       } else if (memcmp(config, "tx", 2) == 0 && (config[2] == 0 || config[2] == ' ')) {
-        sprintf(reply, "> %d", (uint32_t) _prefs->tx_power_dbm);
+        sprintf(reply, "> %d", (int32_t) _prefs->tx_power_dbm);
       } else if (memcmp(config, "freq", 4) == 0) {
         sprintf(reply, "> %s", StrHelper::ftoa(_prefs->freq));
       } else if (memcmp(config, "public.key", 10) == 0) {
diff --git a/src/helpers/CommonCLI.h b/src/helpers/CommonCLI.h
index 8661d1e6d..146e1c6e2 100644
--- a/src/helpers/CommonCLI.h
+++ b/src/helpers/CommonCLI.h
@@ -19,7 +19,7 @@ struct NodePrefs { // persisted to file
   double node_lat, node_lon;
   char password[16];
   float freq;
-  uint8_t tx_power_dbm;
+  int8_t tx_power_dbm;
   uint8_t disable_fwd;
   uint8_t advert_interval;       // minutes / 2
   uint8_t flood_advert_interval; // hours
@@ -67,7 +67,7 @@ class CommonCLICallbacks {
   virtual void setLoggingOn(bool enable) = 0;
   virtual void eraseLogFile() = 0;
   virtual void dumpLogFile() = 0;
-  virtual void setTxPower(uint8_t power_dbm) = 0;
+  virtual void setTxPower(int8_t power_dbm) = 0;
   virtual void formatNeighborsReply(char *reply) = 0;
   virtual void removeNeighbor(const uint8_t* pubkey, int key_len) {
     // no op by default
diff --git a/variants/ebyte_eora_s3/target.cpp b/variants/ebyte_eora_s3/target.cpp
index 647f59972..501f560be 100644
--- a/variants/ebyte_eora_s3/target.cpp
+++ b/variants/ebyte_eora_s3/target.cpp
@@ -75,7 +75,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/ebyte_eora_s3/target.h b/variants/ebyte_eora_s3/target.h
index f184c7575..892c3de3f 100644
--- a/variants/ebyte_eora_s3/target.h
+++ b/variants/ebyte_eora_s3/target.h
@@ -25,5 +25,5 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/generic-e22/target.cpp b/variants/generic-e22/target.cpp
index e02537798..f76bb979a 100644
--- a/variants/generic-e22/target.cpp
+++ b/variants/generic-e22/target.cpp
@@ -38,7 +38,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/generic-e22/target.h b/variants/generic-e22/target.h
index 442706f33..5ad13054f 100644
--- a/variants/generic-e22/target.h
+++ b/variants/generic-e22/target.h
@@ -17,5 +17,5 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/generic_espnow/target.cpp b/variants/generic_espnow/target.cpp
index 6b5d4e444..f42085c04 100644
--- a/variants/generic_espnow/target.cpp
+++ b/variants/generic_espnow/target.cpp
@@ -25,7 +25,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   // no-op
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio_driver.setTxPower(dbm);
 }
 
diff --git a/variants/generic_espnow/target.h b/variants/generic_espnow/target.h
index 99b6f5778..1ebd0837b 100644
--- a/variants/generic_espnow/target.h
+++ b/variants/generic_espnow/target.h
@@ -12,5 +12,5 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/heltec_ct62/target.cpp b/variants/heltec_ct62/target.cpp
index a8c15f5ff..5cc621a13 100644
--- a/variants/heltec_ct62/target.cpp
+++ b/variants/heltec_ct62/target.cpp
@@ -27,7 +27,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/heltec_ct62/target.h b/variants/heltec_ct62/target.h
index 9639ab2df..34130ae77 100644
--- a/variants/heltec_ct62/target.h
+++ b/variants/heltec_ct62/target.h
@@ -16,5 +16,5 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
\ No newline at end of file
diff --git a/variants/heltec_e213/target.cpp b/variants/heltec_e213/target.cpp
index 23561850e..c9233431c 100644
--- a/variants/heltec_e213/target.cpp
+++ b/variants/heltec_e213/target.cpp
@@ -44,7 +44,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/heltec_e213/target.h b/variants/heltec_e213/target.h
index 9ecdc212a..14969c0f4 100644
--- a/variants/heltec_e213/target.h
+++ b/variants/heltec_e213/target.h
@@ -25,5 +25,5 @@ extern MomentaryButton user_btn;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
\ No newline at end of file
diff --git a/variants/heltec_e290/target.cpp b/variants/heltec_e290/target.cpp
index 92b02092e..b0c9630cf 100644
--- a/variants/heltec_e290/target.cpp
+++ b/variants/heltec_e290/target.cpp
@@ -44,7 +44,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/heltec_e290/target.h b/variants/heltec_e290/target.h
index 607701127..5d423fc0d 100644
--- a/variants/heltec_e290/target.h
+++ b/variants/heltec_e290/target.h
@@ -25,5 +25,5 @@ extern MomentaryButton user_btn;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
\ No newline at end of file
diff --git a/variants/heltec_mesh_solar/target.cpp b/variants/heltec_mesh_solar/target.cpp
index ad79f7171..9852b68f8 100644
--- a/variants/heltec_mesh_solar/target.cpp
+++ b/variants/heltec_mesh_solar/target.cpp
@@ -34,7 +34,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/heltec_mesh_solar/target.h b/variants/heltec_mesh_solar/target.h
index e301a2735..f1921abfa 100644
--- a/variants/heltec_mesh_solar/target.h
+++ b/variants/heltec_mesh_solar/target.h
@@ -42,5 +42,5 @@ extern SolarSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/heltec_t114/target.cpp b/variants/heltec_t114/target.cpp
index c3341103a..160d00b6a 100644
--- a/variants/heltec_t114/target.cpp
+++ b/variants/heltec_t114/target.cpp
@@ -36,7 +36,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/heltec_t114/target.h b/variants/heltec_t114/target.h
index 6306cd699..187675e97 100644
--- a/variants/heltec_t114/target.h
+++ b/variants/heltec_t114/target.h
@@ -50,5 +50,5 @@ extern T114SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/heltec_t190/target.cpp b/variants/heltec_t190/target.cpp
index b93575943..d22f8b8cf 100644
--- a/variants/heltec_t190/target.cpp
+++ b/variants/heltec_t190/target.cpp
@@ -44,7 +44,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/heltec_t190/target.h b/variants/heltec_t190/target.h
index 8a5fc716f..83e035707 100644
--- a/variants/heltec_t190/target.h
+++ b/variants/heltec_t190/target.h
@@ -25,5 +25,5 @@ extern MomentaryButton user_btn;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
\ No newline at end of file
diff --git a/variants/heltec_tracker/target.cpp b/variants/heltec_tracker/target.cpp
index 5ba9a8fb4..25c2634bb 100644
--- a/variants/heltec_tracker/target.cpp
+++ b/variants/heltec_tracker/target.cpp
@@ -47,7 +47,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/heltec_tracker/target.h b/variants/heltec_tracker/target.h
index 23fab16e1..5296fb2c2 100644
--- a/variants/heltec_tracker/target.h
+++ b/variants/heltec_tracker/target.h
@@ -43,5 +43,5 @@ extern HWTSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/heltec_tracker_v2/target.cpp b/variants/heltec_tracker_v2/target.cpp
index da397fb74..c2e26b20d 100644
--- a/variants/heltec_tracker_v2/target.cpp
+++ b/variants/heltec_tracker_v2/target.cpp
@@ -50,7 +50,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/heltec_tracker_v2/target.h b/variants/heltec_tracker_v2/target.h
index 190404ef9..5b799e780 100644
--- a/variants/heltec_tracker_v2/target.h
+++ b/variants/heltec_tracker_v2/target.h
@@ -26,5 +26,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/heltec_v2/target.cpp b/variants/heltec_v2/target.cpp
index df71d3f4b..c5a047528 100644
--- a/variants/heltec_v2/target.cpp
+++ b/variants/heltec_v2/target.cpp
@@ -43,7 +43,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/heltec_v2/target.h b/variants/heltec_v2/target.h
index 48d750be4..788dac723 100644
--- a/variants/heltec_v2/target.h
+++ b/variants/heltec_v2/target.h
@@ -25,5 +25,5 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/heltec_v3/target.cpp b/variants/heltec_v3/target.cpp
index 78b881972..cdd2535e8 100644
--- a/variants/heltec_v3/target.cpp
+++ b/variants/heltec_v3/target.cpp
@@ -50,7 +50,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/heltec_v3/target.h b/variants/heltec_v3/target.h
index 739aecfe0..21a209f99 100644
--- a/variants/heltec_v3/target.h
+++ b/variants/heltec_v3/target.h
@@ -26,5 +26,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/heltec_v4/target.cpp b/variants/heltec_v4/target.cpp
index 0d2bd4976..f971cc608 100644
--- a/variants/heltec_v4/target.cpp
+++ b/variants/heltec_v4/target.cpp
@@ -50,7 +50,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/heltec_v4/target.h b/variants/heltec_v4/target.h
index 00d2adab6..5016588d1 100644
--- a/variants/heltec_v4/target.h
+++ b/variants/heltec_v4/target.h
@@ -30,5 +30,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/heltec_wireless_paper/target.cpp b/variants/heltec_wireless_paper/target.cpp
index dd2d51c0f..06f548fc0 100644
--- a/variants/heltec_wireless_paper/target.cpp
+++ b/variants/heltec_wireless_paper/target.cpp
@@ -43,7 +43,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/heltec_wireless_paper/target.h b/variants/heltec_wireless_paper/target.h
index b89c486fb..65739e773 100644
--- a/variants/heltec_wireless_paper/target.h
+++ b/variants/heltec_wireless_paper/target.h
@@ -25,5 +25,5 @@ extern MomentaryButton user_btn;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
\ No newline at end of file
diff --git a/variants/ikoka_handheld_nrf/target.cpp b/variants/ikoka_handheld_nrf/target.cpp
index efa6669f1..48244e172 100644
--- a/variants/ikoka_handheld_nrf/target.cpp
+++ b/variants/ikoka_handheld_nrf/target.cpp
@@ -36,7 +36,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/ikoka_handheld_nrf/target.h b/variants/ikoka_handheld_nrf/target.h
index a28ca81a5..d4af956e1 100644
--- a/variants/ikoka_handheld_nrf/target.h
+++ b/variants/ikoka_handheld_nrf/target.h
@@ -25,5 +25,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/ikoka_nano_nrf/target.cpp b/variants/ikoka_nano_nrf/target.cpp
index aed591823..be20cfb43 100644
--- a/variants/ikoka_nano_nrf/target.cpp
+++ b/variants/ikoka_nano_nrf/target.cpp
@@ -34,7 +34,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/ikoka_nano_nrf/target.h b/variants/ikoka_nano_nrf/target.h
index 9b4e908ec..7949ab638 100644
--- a/variants/ikoka_nano_nrf/target.h
+++ b/variants/ikoka_nano_nrf/target.h
@@ -24,5 +24,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/ikoka_stick_nrf/target.cpp b/variants/ikoka_stick_nrf/target.cpp
index bd803399b..4f6befc60 100644
--- a/variants/ikoka_stick_nrf/target.cpp
+++ b/variants/ikoka_stick_nrf/target.cpp
@@ -34,7 +34,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/ikoka_stick_nrf/target.h b/variants/ikoka_stick_nrf/target.h
index c276e89f2..fab825926 100644
--- a/variants/ikoka_stick_nrf/target.h
+++ b/variants/ikoka_stick_nrf/target.h
@@ -24,5 +24,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/keepteen_lt1/target.cpp b/variants/keepteen_lt1/target.cpp
index e72abf08b..e2e183a70 100644
--- a/variants/keepteen_lt1/target.cpp
+++ b/variants/keepteen_lt1/target.cpp
@@ -40,7 +40,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/keepteen_lt1/target.h b/variants/keepteen_lt1/target.h
index 0f1aa756c..f2468d34e 100644
--- a/variants/keepteen_lt1/target.h
+++ b/variants/keepteen_lt1/target.h
@@ -26,5 +26,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/lilygo_t3s3/target.cpp b/variants/lilygo_t3s3/target.cpp
index 1c7b3b094..284811881 100644
--- a/variants/lilygo_t3s3/target.cpp
+++ b/variants/lilygo_t3s3/target.cpp
@@ -38,7 +38,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/lilygo_t3s3/target.h b/variants/lilygo_t3s3/target.h
index f184c7575..892c3de3f 100644
--- a/variants/lilygo_t3s3/target.h
+++ b/variants/lilygo_t3s3/target.h
@@ -25,5 +25,5 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/lilygo_t3s3_sx1276/target.cpp b/variants/lilygo_t3s3_sx1276/target.cpp
index 042ff2062..e7fe07a0c 100644
--- a/variants/lilygo_t3s3_sx1276/target.cpp
+++ b/variants/lilygo_t3s3_sx1276/target.cpp
@@ -44,7 +44,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/lilygo_t3s3_sx1276/target.h b/variants/lilygo_t3s3_sx1276/target.h
index 98a0fe359..2df4b3edb 100644
--- a/variants/lilygo_t3s3_sx1276/target.h
+++ b/variants/lilygo_t3s3_sx1276/target.h
@@ -25,5 +25,5 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
\ No newline at end of file
diff --git a/variants/lilygo_tbeam_1w/target.cpp b/variants/lilygo_tbeam_1w/target.cpp
index fcdb42ed8..8cb6bdfa3 100644
--- a/variants/lilygo_tbeam_1w/target.cpp
+++ b/variants/lilygo_tbeam_1w/target.cpp
@@ -54,7 +54,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/lilygo_tbeam_1w/target.h b/variants/lilygo_tbeam_1w/target.h
index 2c3e8970a..99a750317 100644
--- a/variants/lilygo_tbeam_1w/target.h
+++ b/variants/lilygo_tbeam_1w/target.h
@@ -23,5 +23,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/lilygo_tbeam_SX1262/target.cpp b/variants/lilygo_tbeam_SX1262/target.cpp
index a8caecb36..f85049d7c 100644
--- a/variants/lilygo_tbeam_SX1262/target.cpp
+++ b/variants/lilygo_tbeam_SX1262/target.cpp
@@ -45,7 +45,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/lilygo_tbeam_SX1262/target.h b/variants/lilygo_tbeam_SX1262/target.h
index 5f33abb87..e5b3e445e 100644
--- a/variants/lilygo_tbeam_SX1262/target.h
+++ b/variants/lilygo_tbeam_SX1262/target.h
@@ -25,5 +25,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/lilygo_tbeam_SX1276/target.cpp b/variants/lilygo_tbeam_SX1276/target.cpp
index 0a7517a21..5fe82e111 100644
--- a/variants/lilygo_tbeam_SX1276/target.cpp
+++ b/variants/lilygo_tbeam_SX1276/target.cpp
@@ -50,7 +50,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/lilygo_tbeam_SX1276/target.h b/variants/lilygo_tbeam_SX1276/target.h
index b382b652d..cd4480dce 100644
--- a/variants/lilygo_tbeam_SX1276/target.h
+++ b/variants/lilygo_tbeam_SX1276/target.h
@@ -25,5 +25,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/lilygo_tbeam_supreme_SX1262/target.cpp b/variants/lilygo_tbeam_supreme_SX1262/target.cpp
index 8ad306f1b..6fec6f583 100644
--- a/variants/lilygo_tbeam_supreme_SX1262/target.cpp
+++ b/variants/lilygo_tbeam_supreme_SX1262/target.cpp
@@ -42,7 +42,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/lilygo_tbeam_supreme_SX1262/target.h b/variants/lilygo_tbeam_supreme_SX1262/target.h
index c6ffa0a66..200a56905 100644
--- a/variants/lilygo_tbeam_supreme_SX1262/target.h
+++ b/variants/lilygo_tbeam_supreme_SX1262/target.h
@@ -23,5 +23,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
\ No newline at end of file
diff --git a/variants/lilygo_tdeck/target.cpp b/variants/lilygo_tdeck/target.cpp
index 50ffa7359..731ecfd86 100644
--- a/variants/lilygo_tdeck/target.cpp
+++ b/variants/lilygo_tdeck/target.cpp
@@ -45,7 +45,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/lilygo_tdeck/target.h b/variants/lilygo_tdeck/target.h
index 4640925f1..c31d0d0ff 100644
--- a/variants/lilygo_tdeck/target.h
+++ b/variants/lilygo_tdeck/target.h
@@ -27,5 +27,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
\ No newline at end of file
diff --git a/variants/lilygo_techo/target.cpp b/variants/lilygo_techo/target.cpp
index 2ebc0641f..12d222ff7 100644
--- a/variants/lilygo_techo/target.cpp
+++ b/variants/lilygo_techo/target.cpp
@@ -42,7 +42,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/lilygo_techo/target.h b/variants/lilygo_techo/target.h
index 2b6ed45fc..d978d5224 100644
--- a/variants/lilygo_techo/target.h
+++ b/variants/lilygo_techo/target.h
@@ -27,5 +27,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/lilygo_techo_lite/target.cpp b/variants/lilygo_techo_lite/target.cpp
index 6979e3478..40a94526e 100644
--- a/variants/lilygo_techo_lite/target.cpp
+++ b/variants/lilygo_techo_lite/target.cpp
@@ -41,7 +41,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/lilygo_techo_lite/target.h b/variants/lilygo_techo_lite/target.h
index 2b6ed45fc..d978d5224 100644
--- a/variants/lilygo_techo_lite/target.h
+++ b/variants/lilygo_techo_lite/target.h
@@ -27,5 +27,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/lilygo_tlora_c6/target.cpp b/variants/lilygo_tlora_c6/target.cpp
index e12c58b5a..3566fbe48 100644
--- a/variants/lilygo_tlora_c6/target.cpp
+++ b/variants/lilygo_tlora_c6/target.cpp
@@ -38,7 +38,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/lilygo_tlora_c6/target.h b/variants/lilygo_tlora_c6/target.h
index c26d59586..1cb52fbc7 100644
--- a/variants/lilygo_tlora_c6/target.h
+++ b/variants/lilygo_tlora_c6/target.h
@@ -16,5 +16,5 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/lilygo_tlora_v2_1/target.cpp b/variants/lilygo_tlora_v2_1/target.cpp
index 65a78c194..ead62e797 100644
--- a/variants/lilygo_tlora_v2_1/target.cpp
+++ b/variants/lilygo_tlora_v2_1/target.cpp
@@ -39,7 +39,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/lilygo_tlora_v2_1/target.h b/variants/lilygo_tlora_v2_1/target.h
index 326a0dee7..cb7d861dd 100644
--- a/variants/lilygo_tlora_v2_1/target.h
+++ b/variants/lilygo_tlora_v2_1/target.h
@@ -25,5 +25,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/mesh_pocket/target.cpp b/variants/mesh_pocket/target.cpp
index a7f6c7fb1..6fabb3174 100644
--- a/variants/mesh_pocket/target.cpp
+++ b/variants/mesh_pocket/target.cpp
@@ -34,7 +34,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/mesh_pocket/target.h b/variants/mesh_pocket/target.h
index 2aa956693..6ab5d9c2f 100644
--- a/variants/mesh_pocket/target.h
+++ b/variants/mesh_pocket/target.h
@@ -26,7 +26,7 @@ extern AutoDiscoverRTCClock rtc_clock;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
 
 extern SensorManager sensors;
diff --git a/variants/meshadventurer/target.cpp b/variants/meshadventurer/target.cpp
index 0e3b03f2b..0edd44030 100644
--- a/variants/meshadventurer/target.cpp
+++ b/variants/meshadventurer/target.cpp
@@ -41,7 +41,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/meshadventurer/target.h b/variants/meshadventurer/target.h
index 31bc40663..9d1ffca8d 100644
--- a/variants/meshadventurer/target.h
+++ b/variants/meshadventurer/target.h
@@ -45,5 +45,5 @@ extern MASensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/meshtiny/target.cpp b/variants/meshtiny/target.cpp
index 5fc60eae4..9188db174 100644
--- a/variants/meshtiny/target.cpp
+++ b/variants/meshtiny/target.cpp
@@ -37,7 +37,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/meshtiny/target.h b/variants/meshtiny/target.h
index 8ee3ee86e..31f8505d6 100644
--- a/variants/meshtiny/target.h
+++ b/variants/meshtiny/target.h
@@ -29,5 +29,5 @@ extern MomentaryButton back_btn;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/minewsemi_me25ls01/target.cpp b/variants/minewsemi_me25ls01/target.cpp
index 13306762a..fcec19419 100644
--- a/variants/minewsemi_me25ls01/target.cpp
+++ b/variants/minewsemi_me25ls01/target.cpp
@@ -88,7 +88,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/minewsemi_me25ls01/target.h b/variants/minewsemi_me25ls01/target.h
index a5da58234..ea7383e25 100644
--- a/variants/minewsemi_me25ls01/target.h
+++ b/variants/minewsemi_me25ls01/target.h
@@ -25,5 +25,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/nano_g2_ultra/target.cpp b/variants/nano_g2_ultra/target.cpp
index 81e7744fc..aad10c505 100644
--- a/variants/nano_g2_ultra/target.cpp
+++ b/variants/nano_g2_ultra/target.cpp
@@ -36,7 +36,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/nano_g2_ultra/target.h b/variants/nano_g2_ultra/target.h
index 3e58b9007..6e3541275 100644
--- a/variants/nano_g2_ultra/target.h
+++ b/variants/nano_g2_ultra/target.h
@@ -45,5 +45,5 @@ extern MomentaryButton user_btn;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/nibble_screen_connect/target.cpp b/variants/nibble_screen_connect/target.cpp
index 1980e0394..6edaaad7a 100644
--- a/variants/nibble_screen_connect/target.cpp
+++ b/variants/nibble_screen_connect/target.cpp
@@ -38,7 +38,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/nibble_screen_connect/target.h b/variants/nibble_screen_connect/target.h
index 66e69901a..f31efb8da 100644
--- a/variants/nibble_screen_connect/target.h
+++ b/variants/nibble_screen_connect/target.h
@@ -25,6 +25,6 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
 
diff --git a/variants/promicro/target.cpp b/variants/promicro/target.cpp
index b26320e47..61eab91c2 100644
--- a/variants/promicro/target.cpp
+++ b/variants/promicro/target.cpp
@@ -40,7 +40,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/promicro/target.h b/variants/promicro/target.h
index 38c4b4e88..d379927ec 100644
--- a/variants/promicro/target.h
+++ b/variants/promicro/target.h
@@ -26,5 +26,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/rak11310/target.cpp b/variants/rak11310/target.cpp
index dba5bff2c..67432998a 100644
--- a/variants/rak11310/target.cpp
+++ b/variants/rak11310/target.cpp
@@ -29,7 +29,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/rak11310/target.h b/variants/rak11310/target.h
index fe45c3f2c..7c25cd901 100644
--- a/variants/rak11310/target.h
+++ b/variants/rak11310/target.h
@@ -16,5 +16,5 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/rak3112/target.cpp b/variants/rak3112/target.cpp
index 634573b81..6cddfce51 100644
--- a/variants/rak3112/target.cpp
+++ b/variants/rak3112/target.cpp
@@ -50,7 +50,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/rak3112/target.h b/variants/rak3112/target.h
index eae90900d..e7d85de9b 100644
--- a/variants/rak3112/target.h
+++ b/variants/rak3112/target.h
@@ -26,5 +26,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/rak3401/target.cpp b/variants/rak3401/target.cpp
index 52f3a3d59..ec4fc28c0 100644
--- a/variants/rak3401/target.cpp
+++ b/variants/rak3401/target.cpp
@@ -48,7 +48,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/rak3401/target.h b/variants/rak3401/target.h
index 32f17cd1d..bb7f5dc49 100644
--- a/variants/rak3401/target.h
+++ b/variants/rak3401/target.h
@@ -26,5 +26,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/rak3x72/target.cpp b/variants/rak3x72/target.cpp
index 446783aa4..48e7f4228 100644
--- a/variants/rak3x72/target.cpp
+++ b/variants/rak3x72/target.cpp
@@ -66,7 +66,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/rak3x72/target.h b/variants/rak3x72/target.h
index e0c1441e7..3ba1cf421 100644
--- a/variants/rak3x72/target.h
+++ b/variants/rak3x72/target.h
@@ -52,5 +52,5 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/rak4631/target.cpp b/variants/rak4631/target.cpp
index bc7465fda..ea6a2bd4a 100644
--- a/variants/rak4631/target.cpp
+++ b/variants/rak4631/target.cpp
@@ -48,7 +48,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/rak4631/target.h b/variants/rak4631/target.h
index aa6be664b..eeb3e0947 100644
--- a/variants/rak4631/target.h
+++ b/variants/rak4631/target.h
@@ -26,5 +26,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/rak_wismesh_tag/target.cpp b/variants/rak_wismesh_tag/target.cpp
index 2bd30864b..9646375e6 100644
--- a/variants/rak_wismesh_tag/target.cpp
+++ b/variants/rak_wismesh_tag/target.cpp
@@ -44,7 +44,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/rak_wismesh_tag/target.h b/variants/rak_wismesh_tag/target.h
index 150d08319..a51b30924 100644
--- a/variants/rak_wismesh_tag/target.h
+++ b/variants/rak_wismesh_tag/target.h
@@ -23,5 +23,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/rpi_picow/target.cpp b/variants/rpi_picow/target.cpp
index abb1485df..e3d4bf090 100644
--- a/variants/rpi_picow/target.cpp
+++ b/variants/rpi_picow/target.cpp
@@ -29,7 +29,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/rpi_picow/target.h b/variants/rpi_picow/target.h
index 17dbb35fd..706578a40 100644
--- a/variants/rpi_picow/target.h
+++ b/variants/rpi_picow/target.h
@@ -16,5 +16,5 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/sensecap_indicator-espnow/target.cpp b/variants/sensecap_indicator-espnow/target.cpp
index efdaac610..6674c180d 100644
--- a/variants/sensecap_indicator-espnow/target.cpp
+++ b/variants/sensecap_indicator-espnow/target.cpp
@@ -37,7 +37,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   // no-op
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio_driver.setTxPower(dbm);
 }
 
diff --git a/variants/sensecap_indicator-espnow/target.h b/variants/sensecap_indicator-espnow/target.h
index bb78e9233..a56dec7bd 100644
--- a/variants/sensecap_indicator-espnow/target.h
+++ b/variants/sensecap_indicator-espnow/target.h
@@ -25,5 +25,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/sensecap_solar/target.cpp b/variants/sensecap_solar/target.cpp
index 6bd7d31a7..2c2ff0dc7 100644
--- a/variants/sensecap_solar/target.cpp
+++ b/variants/sensecap_solar/target.cpp
@@ -29,7 +29,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/sensecap_solar/target.h b/variants/sensecap_solar/target.h
index 90d60ba52..f4a988013 100644
--- a/variants/sensecap_solar/target.h
+++ b/variants/sensecap_solar/target.h
@@ -17,5 +17,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/station_g2/target.cpp b/variants/station_g2/target.cpp
index 3f0c1404d..026b25de7 100644
--- a/variants/station_g2/target.cpp
+++ b/variants/station_g2/target.cpp
@@ -51,7 +51,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/station_g2/target.h b/variants/station_g2/target.h
index 2bf7016d4..01428d586 100644
--- a/variants/station_g2/target.h
+++ b/variants/station_g2/target.h
@@ -26,5 +26,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/t1000-e/target.cpp b/variants/t1000-e/target.cpp
index 82d958b5d..da8fa48bb 100644
--- a/variants/t1000-e/target.cpp
+++ b/variants/t1000-e/target.cpp
@@ -85,7 +85,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/t1000-e/target.h b/variants/t1000-e/target.h
index 27351b945..d4e3c02c5 100644
--- a/variants/t1000-e/target.h
+++ b/variants/t1000-e/target.h
@@ -43,5 +43,5 @@ extern T1000SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/tenstar_c3/target.cpp b/variants/tenstar_c3/target.cpp
index a29780f09..d4f189b52 100644
--- a/variants/tenstar_c3/target.cpp
+++ b/variants/tenstar_c3/target.cpp
@@ -38,7 +38,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/tenstar_c3/target.h b/variants/tenstar_c3/target.h
index fa29e52bd..e503564b3 100644
--- a/variants/tenstar_c3/target.h
+++ b/variants/tenstar_c3/target.h
@@ -17,5 +17,5 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/thinknode_m1/target.cpp b/variants/thinknode_m1/target.cpp
index c3b1abc21..ec2438d40 100644
--- a/variants/thinknode_m1/target.cpp
+++ b/variants/thinknode_m1/target.cpp
@@ -35,7 +35,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/thinknode_m1/target.h b/variants/thinknode_m1/target.h
index 8425369d8..92661d096 100644
--- a/variants/thinknode_m1/target.h
+++ b/variants/thinknode_m1/target.h
@@ -45,5 +45,5 @@ extern ThinkNodeM1SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/thinknode_m2/target.cpp b/variants/thinknode_m2/target.cpp
index cb3c1624d..e7e36d05f 100644
--- a/variants/thinknode_m2/target.cpp
+++ b/variants/thinknode_m2/target.cpp
@@ -46,7 +46,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/thinknode_m2/target.h b/variants/thinknode_m2/target.h
index b05def8aa..77ebbfde8 100644
--- a/variants/thinknode_m2/target.h
+++ b/variants/thinknode_m2/target.h
@@ -26,7 +26,7 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
 
  
\ No newline at end of file
diff --git a/variants/thinknode_m3/target.cpp b/variants/thinknode_m3/target.cpp
index 91d186dc1..ca2b0aa06 100644
--- a/variants/thinknode_m3/target.cpp
+++ b/variants/thinknode_m3/target.cpp
@@ -89,7 +89,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/thinknode_m3/target.h b/variants/thinknode_m3/target.h
index 23e995814..4124761cf 100644
--- a/variants/thinknode_m3/target.h
+++ b/variants/thinknode_m3/target.h
@@ -25,5 +25,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/thinknode_m5/target.cpp b/variants/thinknode_m5/target.cpp
index 8208d2c43..a7a049ef4 100644
--- a/variants/thinknode_m5/target.cpp
+++ b/variants/thinknode_m5/target.cpp
@@ -53,7 +53,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/thinknode_m5/target.h b/variants/thinknode_m5/target.h
index 2af42095c..a228cc9f5 100644
--- a/variants/thinknode_m5/target.h
+++ b/variants/thinknode_m5/target.h
@@ -29,7 +29,7 @@ extern PCA9557 expander;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
 
  
\ No newline at end of file
diff --git a/variants/thinknode_m6/target.cpp b/variants/thinknode_m6/target.cpp
index c14dd300f..36ca86180 100644
--- a/variants/thinknode_m6/target.cpp
+++ b/variants/thinknode_m6/target.cpp
@@ -39,7 +39,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/thinknode_m6/target.h b/variants/thinknode_m6/target.h
index 38b1fed1b..fb129988f 100644
--- a/variants/thinknode_m6/target.h
+++ b/variants/thinknode_m6/target.h
@@ -27,5 +27,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/tiny_relay/target.cpp b/variants/tiny_relay/target.cpp
index f738ac179..313dfaa94 100644
--- a/variants/tiny_relay/target.cpp
+++ b/variants/tiny_relay/target.cpp
@@ -70,7 +70,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr)
     radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm)
+void radio_set_tx_power(int8_t dbm)
 {
     radio.setOutputPower(dbm);
 }
diff --git a/variants/tiny_relay/target.h b/variants/tiny_relay/target.h
index 82747cdcc..d15837121 100644
--- a/variants/tiny_relay/target.h
+++ b/variants/tiny_relay/target.h
@@ -55,5 +55,5 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/waveshare_rp2040_lora/target.cpp b/variants/waveshare_rp2040_lora/target.cpp
index 7bc1d0430..a9121b0c3 100644
--- a/variants/waveshare_rp2040_lora/target.cpp
+++ b/variants/waveshare_rp2040_lora/target.cpp
@@ -39,7 +39,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/waveshare_rp2040_lora/target.h b/variants/waveshare_rp2040_lora/target.h
index aed558939..fe1903de1 100644
--- a/variants/waveshare_rp2040_lora/target.h
+++ b/variants/waveshare_rp2040_lora/target.h
@@ -17,5 +17,5 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/wio-e5-dev/target.cpp b/variants/wio-e5-dev/target.cpp
index 42e900e40..3e59b6cee 100644
--- a/variants/wio-e5-dev/target.cpp
+++ b/variants/wio-e5-dev/target.cpp
@@ -63,7 +63,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/wio-e5-dev/target.h b/variants/wio-e5-dev/target.h
index 5fdd0abaf..1d1fc5cb9 100644
--- a/variants/wio-e5-dev/target.h
+++ b/variants/wio-e5-dev/target.h
@@ -29,5 +29,5 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/wio-e5-mini/target.cpp b/variants/wio-e5-mini/target.cpp
index 0e2358b82..2e95ad6d1 100644
--- a/variants/wio-e5-mini/target.cpp
+++ b/variants/wio-e5-mini/target.cpp
@@ -61,7 +61,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/wio-e5-mini/target.h b/variants/wio-e5-mini/target.h
index 921c38d34..a4e5fb60c 100644
--- a/variants/wio-e5-mini/target.h
+++ b/variants/wio-e5-mini/target.h
@@ -60,5 +60,5 @@ extern WIOE5SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/wio-tracker-l1/target.cpp b/variants/wio-tracker-l1/target.cpp
index 64866de00..4575a76c8 100644
--- a/variants/wio-tracker-l1/target.cpp
+++ b/variants/wio-tracker-l1/target.cpp
@@ -44,7 +44,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/wio-tracker-l1/target.h b/variants/wio-tracker-l1/target.h
index 97e575d89..e23476473 100644
--- a/variants/wio-tracker-l1/target.h
+++ b/variants/wio-tracker-l1/target.h
@@ -33,5 +33,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/wio_wm1110/target.cpp b/variants/wio_wm1110/target.cpp
index c659d708b..457d5bda2 100644
--- a/variants/wio_wm1110/target.cpp
+++ b/variants/wio_wm1110/target.cpp
@@ -81,7 +81,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/wio_wm1110/target.h b/variants/wio_wm1110/target.h
index 9bd4a22b8..8712a0ef0 100644
--- a/variants/wio_wm1110/target.h
+++ b/variants/wio_wm1110/target.h
@@ -16,6 +16,6 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
 
diff --git a/variants/xiao_c3/target.cpp b/variants/xiao_c3/target.cpp
index fe3f7196a..f8ee3d92c 100644
--- a/variants/xiao_c3/target.cpp
+++ b/variants/xiao_c3/target.cpp
@@ -46,7 +46,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/xiao_c3/target.h b/variants/xiao_c3/target.h
index a7ef44218..57e3b81ca 100644
--- a/variants/xiao_c3/target.h
+++ b/variants/xiao_c3/target.h
@@ -16,5 +16,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/xiao_c6/XiaoC6Board.cpp b/variants/xiao_c6/XiaoC6Board.cpp
index 555fed629..5710c4ccb 100644
--- a/variants/xiao_c6/XiaoC6Board.cpp
+++ b/variants/xiao_c6/XiaoC6Board.cpp
@@ -39,7 +39,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/xiao_c6/target.h b/variants/xiao_c6/target.h
index 0fbb0bb2e..28b465383 100644
--- a/variants/xiao_c6/target.h
+++ b/variants/xiao_c6/target.h
@@ -17,5 +17,5 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/xiao_nrf52/target.cpp b/variants/xiao_nrf52/target.cpp
index c9c02d215..a8f4162ea 100644
--- a/variants/xiao_nrf52/target.cpp
+++ b/variants/xiao_nrf52/target.cpp
@@ -34,7 +34,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/xiao_nrf52/target.h b/variants/xiao_nrf52/target.h
index e1ea2a6b8..f4076c349 100644
--- a/variants/xiao_nrf52/target.h
+++ b/variants/xiao_nrf52/target.h
@@ -22,5 +22,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/xiao_rp2040/target.cpp b/variants/xiao_rp2040/target.cpp
index b7c199758..6c9a91434 100644
--- a/variants/xiao_rp2040/target.cpp
+++ b/variants/xiao_rp2040/target.cpp
@@ -39,7 +39,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/xiao_rp2040/target.h b/variants/xiao_rp2040/target.h
index 33b3766c2..528c44414 100644
--- a/variants/xiao_rp2040/target.h
+++ b/variants/xiao_rp2040/target.h
@@ -17,5 +17,5 @@ extern SensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();
diff --git a/variants/xiao_s3_wio/target.cpp b/variants/xiao_s3_wio/target.cpp
index 26cd27ac2..50981ab64 100644
--- a/variants/xiao_s3_wio/target.cpp
+++ b/variants/xiao_s3_wio/target.cpp
@@ -46,7 +46,7 @@ void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
   radio.setCodingRate(cr);
 }
 
-void radio_set_tx_power(uint8_t dbm) {
+void radio_set_tx_power(int8_t dbm) {
   radio.setOutputPower(dbm);
 }
 
diff --git a/variants/xiao_s3_wio/target.h b/variants/xiao_s3_wio/target.h
index c3227368c..fffd16833 100644
--- a/variants/xiao_s3_wio/target.h
+++ b/variants/xiao_s3_wio/target.h
@@ -26,5 +26,5 @@ extern EnvironmentSensorManager sensors;
 bool radio_init();
 uint32_t radio_get_rng_seed();
 void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
-void radio_set_tx_power(uint8_t dbm);
+void radio_set_tx_power(int8_t dbm);
 mesh::LocalIdentity radio_new_identity();