Andre Vk1AD a SOTA expert and Yaesu owner of the FT-857D created a useful cheat sheet for programming the radio for his SOTA activities for use with the optional MH-59 Remote DTMF Mic. Check out his blog and he has a ton of useful information
In order to use the microphone you need to perform the following tasks:
- Set menu #59.
- Plug in the mic.
- Configure ALC settings
- Configure FM/AM microphone gain.
- Configure custom buttons.
The MH-59A8J microphone adds the following useful features:
- Rotary control for VFO
- Programmable keys
- additional function buttons