Module repeater 

FM repeater configuration types.

The TH-D75 supports FM repeater operation with configurable offset frequency, automatic offset based on the operating band, a 1750 Hz tone burst for repeater access (common in Europe and Japan), and reverse function for listening on the repeater input frequency.

Offset frequency (per User Manual Chapter 7)

Menu No. 140 sets the offset frequency. Range: 0.00-29.95 MHz in 50 kHz steps. Defaults: 600 kHz on 144 MHz, 5 MHz on 430/440 MHz.

Automatic Repeater Offset (per User Manual Chapter 7)

Menu No. 141 enables automatic offset. When active, the radio selects offset direction and activates the Tone function based on the operating frequency and band plan.

TH-D75A auto-offset directions

Frequency Range	Offset
145.100-145.499 MHz	-600 kHz
146.000-146.399 MHz	+600 kHz
146.600-146.999 MHz	-600 kHz
147.000-147.399 MHz	+600 kHz
147.600-147.999 MHz	-600 kHz
223.920-224.999 MHz	-1.6 MHz
442.000-444.999 MHz	+5 MHz
447.000-449.999 MHz	-5 MHz
All other frequencies	Simplex

TH-D75E auto-offset directions

Frequency Range	Offset
145.600-145.799 MHz	-600 kHz
All other frequencies	Simplex

Offset direction (per User Manual Chapter 7)

[F], [REV] cycles: Simplex -> + -> - -> Simplex. TH-D75E on 430 MHz adds: = (-7.6 MHz). If the offset TX frequency falls outside the band, TX is inhibited.

Reverse function (per User Manual Chapter 7)

[REV] exchanges TX and RX frequencies so you can check signal strength from the other station directly. The R icon appears when active. Reverse is inhibited if the resulting TX or RX frequency would be out of range. Auto Repeater Offset does not function when Reverse is on.

These types model repeater settings from Chapter 7 of the TH-D75 user manual. Derived from the capability gap analysis features 198-199 and feature 137 (1750 Hz tone).

Structs

RepeaterConfig

FM repeater operating configuration.

Enums

ToneBurstHold

1750 Hz tone burst hold mode (Menu No. 143).