Module fm

kenwood_thd75::types

Module fm 

Source
Expand description

FM broadcast radio types.

The TH-D75 has a built-in wideband FM broadcast receiver covering 76.0-107.9 MHz. It provides 10 FM memory channels (FM0-FM9) for storing favourite broadcast stations.

§Reception methods (per Operating Tips §5.10.7)

There are two ways to receive FM broadcast:

  1. Band B frequency selection: Tune Band B to the FM broadcast band and select WFM mode. This uses the normal Band B receiver.
  2. FM Radio mode (Menu No. 700): A dedicated FM radio mode that runs concurrently with APRS and D-STAR operations. When a signal is received on the amateur bands, FM Radio audio is muted; it returns automatically after a configurable timeout (Menu No. 701).

§Operation (per User Manual Chapter 21)

  • Frequency range: 76.0-108.0 MHz (WFM)
  • 10 memory channels (FM0-FM9) with assignable names
  • Direct frequency input supported via [ENT] and number keys
  • [MODE] toggles between FM Radio mode (VFO tuning) and FM Radio Memory mode (FM0-FM9 recall). Cannot switch to memory mode if no stations are registered.
  • [A/B] starts seek scanning; “<<Tuned>>” is displayed when a station is found
  • FM Radio cannot be enabled when Band B is set to LF/MF, HF, 50, or FMBC bands, or when Priority Scan, WX Alert, or IF/Detect output mode is active.
  • When FM Radio mode is on, Menu No. 105, 134, 200, 203, 204, 210, and 220 cannot be accessed.

The FM radio is toggled on/off via the FR CAT command (already implemented as get_fm_radio / set_fm_radio). FM memory channels are managed through the radio’s menu system or MCP software, as there is no CAT command for individual FM memory channel programming.

When FM radio mode is active, the display shows “WFM” (Wide FM) and the radio uses the wideband FM demodulator. The LED control setting has a separate “FM Radio” option for controlling LED behavior during FM broadcast reception.

See TH-D75 User Manual, Chapter 21: FM Radio.

Structs§

FmRadioChannel
An FM broadcast radio memory channel (FM0-FM9).

Enums§

FmRadioMode
FM radio operating mode.

Constants§

FM_RADIO_CHANNEL_COUNT
Number of FM radio memory channels available.
FM_RADIO_MAX_HZ
FM broadcast radio frequency range upper bound (108.0 MHz), in Hz.
FM_RADIO_MIN_HZ
FM broadcast radio frequency range lower bound (76.0 MHz), in Hz.