From the repository at https://github.com/g4klx/FMRepeater
“These are the source files for building the FMRepeater. This is a simplified version of the old Analogue Repeater that has existed on the OpenDV GitHub repository for many years. It has the following features:
- Seperate id and beacon texts.
- Timeout can be one of three styles, or no timeout.
- Optional callsign at repeater open or close, or both.
- Id may be suppressed if too close in time to a previous id.
- Optional kerchunk timer.
- Selectable acknowledgement style.
- All ids and acknowledgements have selectable frequency and speed.
- Minimum talk time before an acknowledgement is sent.
- Built-in string audio bandpass filter.
- Repeater control via an Arduino or a UDRC.
- Audio I/O via any supported sound system, including the UDRC.
It builds on 32-bit and 64-bit Linux as well as on Windows using Visual Studio 2017 on x86 and x64.page on the LCDproc website for more info.”