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Armel FAUVEAU edited this page Jul 28, 2026 · 27 revisions

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Menu operation

The menu can be accessed with the M button (short press).

Once in the main menu, the items are displayed on the left-hand side of the screen. The currently selected item is highlighted, and its current value is shown on the right. The menu item number is shown at the bottom-left corner, ranging from 01 up to the highest number.

To find a menu item, use the UP and DOWN arrow buttons, or enter the menu item number (see the lists below) on the numeric keypad. For instance, to access SysInf, enter 52 on the keypad.

Once the desired menu item is highlighted, pressing the M button enters that menu item.

Once the menu item is selected, pressing the UP and DOWN arrow buttons adjusts the setting for that item. To confirm the selection, press the M button. To cancel the selection, press the EXIT key.

Menu

Quick tips

  • the first 13 items are the main live VFO/channel settings
  • ScList, ScPri, PriCh1, PriCh2, and ScnRev are the key scan-related items
  • F1Shrt, F1Long, F2Shrt, F2Long, and M Long control customizable shortcuts
  • the hidden menu is only available at startup with PTT + SIDE BUTTON 1️⃣

Main menu

The number in front of each menu item description is the menu item number that can be used for quick selection.

  1. Step - step of the frequency (in kHz), UP and DOWN buttons change frequency by this value, also you can only set a frequency that is multiple of half of this value.

  2. Power - radio output power (LOW 1 / LOW 2 / LOW 3 / LOW 4 / LOW 5 / MID / HIGH / USER). Note that USER power can be tuned via the SetPower menu.

  3. RxDCS - receiver Digital-Coded Squelch. If you enable this, squelch will only unlock if this code is being received. You can start a DCS/CTCSS scan while you are in this menu option by pressing the * SCAN button.

  4. RxCTCS - receiver Continuous Tone-Coded Squelch System. Squelch will only unlock if this code is being received. You can start a DCS/CTCSS scan while you are in this menu option by pressing the * SCAN button.

  5. TxDCS - transmitter Digital-Coded Squelch, radio will send given code while transmitting

  6. TxCTCS - transmitter Continuous Tone-Coded Squelch System, radio will send given code while transmitting

    In the RxDCS, TxDCS, RxCTCS, and TxCTCS submenus, the top-right badge shows the selected entry and its homologated index:

    • for CTCSS: NN/HH, where NN is the position in the full 50-tone list and HH is the homologated tone number. -- means the selected tone is one of the extra, non-homologated tones.
    • for DCS: NNN/HH, where NNN is the position in the full DCS list and HH is the homologated DCS number. -- means the selected DCS entry is not in the homologated PMR446 list.
    • OFF is displayed as 00/00 for CTCSS and 000/00 for DCS.
    • DCS values ending in N are normal codes; values ending in I are inverted codes. The inverted DCS entries are shown in the full list, but they do not receive a homologated index and therefore show --.

  7. TxODir - transmitter frequency offset direction

  8. TxOffs - transmitter frequency offset value

  9. W/N - bandwidth used by transceiver

    • WIDE - 25 kHz
    • NARROW - 12.5 kHz

  10. BusyCL - busy channel lockout, blocks radio from transmitting when signal is being received

  11. Compnd - compander (compressor / expander), allows signals with a large dynamic range to be transmitted over facilities that have a smaller dynamic range capability, improves audio quality, both radios should use this option

  12. Mode - demodulation mode, default is FM, AM / USB can be used for listening only

  13. TXLock - enable or disable the channel's transmit mode (if it is not covered by the F Lock plan)

  14. ChList - select memory channel scan list

  15. ChSave - save current setting to a memory channel

  16. ChDele - delete memory channel

  17. ChName - modify memory channel name

    • Use UP and DOWN buttons to select a channel to edit
    • Press the M button again to enter edit name mode
    • Use the number keys in multi-tap mode to edit the current character, like on older mobile phones
      • press the same key again to cycle through the letters and number assigned to it (2 = a, b, c, 2, etc.)
      • long-press a number key to enter the corresponding number directly
      • short-press F to switch between lowercase and uppercase (abc / ABC)
      • long-press F to enter #
      • short-press * SCAN to enter -, or long-press it to enter *
      • short-press 0 to enter a space, then press it again to enter 0
    • You can still use the UP and DOWN buttons to cycle through the available characters manually
    • Press the M button to move to the next character position
    • Repeat above two steps till you reach the end
    • When "Sure?" pops up, press M button to save, or Exit to cancel
    • Short-press EXIT to move back one character; from the first character position, it exits name editing
    • Long-press EXIT to cancel the edit and return to the main menu.

  18. ScList - selects the scan list used for channel scanning.

  19. ScPri - enables/disables priority-channel support during scanning.

  20. PriCh1 - sets priority channel 1️⃣

  21. PriCh2 - sets priority channel 2️⃣

  22. ScnRev - scan resume mode

    • CARRIER - after signal disappears, pause for [250 milliseconds to 20 seconds] before resuming scanning
    • STOP - after receiving a signal, stop the scan
    • TIMEOUT - resuming scanning after [5 seconds to 2 minutes] pause

  23. F1Shrt - SIDE BUTTON 1️⃣ short press function

  24. F1Long - SIDE BUTTON 1️⃣ long press function

  25. F2Shrt - SIDE BUTTON 2️⃣ short press function

  26. F2Long - SIDE BUTTON 2️⃣ long press function

  27. M Long - M button long press function

  28. KeyLck - auto keypad lock option (OFF or 15 seconds to 10 minutes before automatic keypad locking)

  29. TxTOut - max transmission time limit

  30. BatSav - battery save option, a rate between active time and sleep time (OFF, 1:1 to 1:5)

  31. BatTxt - additional battery value on the status bar (NONE, VOLTAGE, or PERCENT)

  32. Mic - microphone sensitivity

  33. MicBar - microphone bar that appears while transmitting

  34. ChDisp - channel display style

  35. POnMsg - startup display mode

    • ALL: show the configured welcome message, voltage, and firmware/version information
    • SOUND: keep the normal startup sound behavior with no welcome screen
    • MESSAGE: show the configured welcome message only
    • VOLTAGE: show the battery voltage and estimated percentage
    • LOGO: show the custom 128x64 boot logo uploaded with UV Studio
    • NONE: skip the startup display

  36. BLTime - backlight duration

  37. BLMin - minimal backlight brightness, when the screen backlight turns OFF it will go dim to this value

  38. BLMax - maximal backlight brightness, when the screen backlight turns ON it will turn bright to this value

  39. BLTxRx - backlight activation on TX or RX

  40. Beep - keypad press beep sound

  41. Roger - roger beep at the end of transmission

  42. STE - squelch tail eliminator, eliminates noise at the end of a transmission

  43. RP STE - repeater squelch tail eliminator

  44. 1 Call - one-key call channel; lets you quickly switch to that channel with the 9 Call button

  45. UPCode - DTMF code that is sent at the beginning of transmission

  46. DWCode - DTMF code that is sent at the end of a transmission

  47. PTT ID - sets if UPCode and/or DWCode should be transmitted

  48. D ST - DTMF side-tone switch; lets you hear transmitted tones through the radio speaker

  49. D Prel - DTMF pre-load time

  50. D Live - displays DTMF codes received by radio in the middle of the screen

  51. VOX - voice-activated TX sensitivity level

  52. SysInf - system information. In current F4HWN builds this item is paginated: enter it with M, then use UP / DOWN to move between pages.

    • identity: firmware author, version, and edition
    • BUILD: build date, build time, and commit identifier
    • BATTERY: measured battery voltage, estimated battery percentage, and selected battery type/profile
    • MEMORY: FLASH and SRAM usage, when the memory page is enabled in the build
    • CODE / WIKI: QR codes for project links, when QR-code pages are enabled in the build

  53. RxMode - sets how the upper and lower frequency is used

    • MAIN ONLY - always transmits and listens on the main frequency (MO)
    • DUAL RX RESPOND - listens to both frequencies, if signal is received on the secondary frequency it locks to it for a couple of seconds so you can respond to the call (DWR)
    • CROSS BAND - always transmits on the primary and listens on the secondary frequency (XB)
    • MAIN TX DUAL RX - always transmits on the primary, listens to both (DW)

  54. Sql - squelch sensitivity level

  55. SetPwr - sets USER Power

    • LOW 1 (< ~20 mW)
    • LOW 2 (~125 mW)
    • LOW 3 (~250 mW)
    • LOW 4 (~500 mW, upper limit under PMR band...)
    • LOW 5 (~1 W)
    • MID (~2 W)
    • HIGH (~5 W)

  56. SetPTT - sets PTT usage

    • CLASSIC
    • ONEPUSH

  57. SetTOT - sets TOT alert

    • OFF
    • SOUND
    • VISUAL
    • ALL (VISUAL + SOUND)

  58. SetEOT - sets EOT alert (useful for pauses between 2 transmissions)

    • OFF
    • SOUND
    • VISUAL
    • ALL (VISUAL + SOUND)

  59. SetCtr - sets LCD contrast

  60. SetInv - sets LCD inverted (best for night vision)

  61. SetLck - selects what is disabled while the keypad lock is active

    • KEYS: lock the front keypad; programmable shortcut actions and PTT remain available
    • KEYS + ACTIONS: also lock the programmable actions assigned to the two side buttons and M Long; PTT remains available
    • KEYS + PTT: also lock PTT to prevent accidental transmission; programmable shortcut actions remain available
    • KEYS + ACTIONS + PTT: lock the front keypad, programmable shortcut actions, and PTT

    In every mode, long-press F # to unlock the radio. See Button functions for details.

  62. SetMet - sets S-Meter design

    • CLASSIC
    • TINY (as on the Yaesu FT4 or FT-65, for example)

  63. SetGUI - sets GUI design

    • CLASSIC (larger font, less information shown)
    • TINY (smaller font, more information shown)

  64. SetRxA – sets the RX audio profile for the current modulation

    FM profiles:

    • FLAT: Lowest output gain (BK4829-safe). Most neutral, best for quiet environments.
    • CLEAN: Default balanced profile. Comfortable audio with moderate gain.
    • MID: Higher gain than CLEAN without the aggressiveness of BOOST.
    • BOOST: Voice-forward profile for weak signals / noisy environments. Higher gain, more "present" audio.
    • MAX: Maximum output gain (may distort on strong signals or small speakers). Best suited for an external speaker.

    AM profiles:

    • SHARP: Narrow IF filter with low gain. More selective, with better adjacent-channel rejection. It can sound harsher or a bit distorted on strong signals, but it stays clear.
    • STOCK: Intended to stay as close as possible to the stock firmware behavior.
    • OPEN: Wider IF filter with higher gain. More open and pleasant on weak signals, but some receptions can sound a bit muffled, especially ATC.

  65. SetTmr - sets whether RX and TX timers are displayed

  66. SetOff - sets the delay before the transceiver goes into deep sleep (OFF or 1 minute to 2 hours)

  67. SetNFM - sets Narrow FM to Narrow or Narrower

  68. SetVol - sets the audio volume gain to fine-tune speaker output

  69. SetKey - sets key to activate RescueOps mode upon startup of the transceiver

  70. SetScn - sets the scan engine mode.

    • NORMAL: uses the standard scan path.
    • FAST: uses the newer fast scan path. The firmware pre-checks several frequencies/channels with RSSI before doing the full receive setup, skips quiet batches faster, refines close candidates on fine steps, and uses a small watchdog to resume if the scan loop stalls.

  71. SetSav - sets the screen saver used after the backlight timeout, when enabled in the build.

    • OFF: no screen saver
    • LOGO: show the custom boot logo as an idle screen
    • LOGO+: show the custom boot logo with a scrolling effect
    • MATRIX: show a matrix-style animated idle screen

    SetSav is active only when BLTime uses a timed backlight duration. It is suspended during RX, TX, PTT, BEAM, and active FM scanning.

Hidden menu

The hidden menu is activated by holding PTT + SIDE BUTTON 1️⃣ while turning on the radio, then releasing all keys.

  1. F Lock - sets the TX frequency band plan.
    • DEFAULT+ (137-174, 400-470) - allows TX on default bands, plus options Tx 200, Tx 350, Tx 500
    • FCC HAM (144-148, 420-450)
    • CA HAM (144-148, 430-450)
    • CE HAM (144-146, 430-440)
    • GB HAM (144-148, 430-440)
    • (137-174, 400-430)
    • (137-174, 400-438)
    • PMR 446
    • GMRS FRS MURS
    • DISABLE ALL - disables TX on all frequencies
    • UNLOCK ALL - enables TX on all bands. It has an additional lock; see how to turn that on.
  2. 350 En - enables RX on 350 MHz
  3. BatCal - battery voltage calibration. Compare the displayed voltage with a multimeter and adjust it until they match as closely as possible
  4. BatTyp - battery type / discharge curve used for the battery percentage calculation. It affects %, not the measured voltage itself
  5. SetNav - configures the navigation type (UP/DOWN for UV-K5, LEFT/RIGHT for UV-K1)
  6. Reset - resets radio configuration settings
    • VFO - removes only channel settings
    • ALL - resets all (channel and radio settings)

Note

In upcoming v5.6.0 builds, SetSav adds one item to the main menu, so the hidden menu starts at 72 instead of 71 as it did in v5.5.0.

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