This documentation explained that I need to replace the TCXO by a 14.7456MHz version which has +-2.5ppm accuracy.
Is this firmware also compatible to my hardware?
In the configuration file of the MMDVM firmware starting from line 60 this is not a possible option, only 14.4MHz is available:
Hello,
a few years ago I bought a RF7021SE board to build my own MMDVM host. I never had the time during the last 7 years so I would like to startover now.
Also I have a STM32F103(C8T6) board.
I followed the tutorial from F5UII: https://www.f5uii.net/en/hotspot-homebrew-zumspot-mmdvm-pistar-tune/amp/
This documentation explained that I need to replace the TCXO by a 14.7456MHz version which has +-2.5ppm accuracy.
Is this firmware also compatible to my hardware? In the configuration file of the MMDVM firmware starting from line 60 this is not a possible option, only 14.4MHz is available:
https://github.com/g4klx/MMDVM/blob/master/Config.h
My question is now, what do I need to configure here? Or is it possible to use a different TCXO on my RF7021 transceiver board?
Anyways the TCXO is not easily available in Germany, until you want to pay around 25€ for three pieces.
Thank you!
Kai