diff --git a/ddbridge/ddbridge-max.c b/ddbridge/ddbridge-max.c
index 8816afe2..72b8c800 100644
--- a/ddbridge/ddbridge-max.c
+++ b/ddbridge/ddbridge-max.c
@@ -40,6 +40,10 @@ static int old_quattro;
 module_param(old_quattro, int, 0444);
 MODULE_PARM_DESC(old_quattro, "old quattro LNB input order ");
 
+static int no_voltage;
+module_param(no_voltage, int, 0444);
+MODULE_PARM_DESC(no_voltage, "Do not enable voltage on LNBH (will also disable 22KHz tone).");
+
 /* MAX LNB interface related functions */
 
 static int lnb_command(struct ddb *dev, u32 link, u32 lnb, u32 cmd)
@@ -164,6 +168,8 @@ static int lnb_set_voltage(struct ddb *dev, u32 link, u32 input,
 {
 	int s = 0;
 
+	if (no_voltage)
+		voltage = SEC_VOLTAGE_OFF;
 	if (dev->link[link].lnb.oldvoltage[input] == voltage)
 		return 0;
 	switch (voltage) {
diff --git a/ddbridge/ddbridge-sx8.c b/ddbridge/ddbridge-sx8.c
index 8160a92c..b713860b 100644
--- a/ddbridge/ddbridge-sx8.c
+++ b/ddbridge/ddbridge-sx8.c
@@ -147,11 +147,14 @@ static int read_status(struct dvb_frontend *fe, enum fe_status *status)
 	if (res.status == MCI_DEMOD_LOCKED) {
 		*status = 0x1f;
 		if (state->mci.signal_info.dvbs2_signal_info.standard == 2) {
-			sx8_base->used_ldpc_bitrate[state->mci.nr] =
-				p->symbol_rate *
-				dvbs2_bits_per_symbol[
-					state->mci.signal_info.
-					dvbs2_signal_info.pls_code];
+			mutex_lock(&mci_base->tuner_lock);
+			if (state->started)
+				sx8_base->used_ldpc_bitrate[state->mci.nr] =
+					p->symbol_rate *
+					dvbs2_bits_per_symbol[
+						state->mci.signal_info.
+						dvbs2_signal_info.pls_code];
+			mutex_unlock(&mci_base->tuner_lock);
 		} else 
 			sx8_base->used_ldpc_bitrate[state->mci.nr] = 0;
 	}