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USPR and GPIO (4 wire analog interface) to P25 #mmdvm_bridge #analog_bridge

 

Hi,
I was wondering if there is any progress in using analog audio with (PTT and COS via a Pi GPIO) _> USPR --- analog bridge -- P25 MMDVM Gateway.
Any help would be greatly appreciated.
Currently using a MMDVM hotspot - P25 radio to Analog 4 wire E+M circuit I'm sure this can be achieved with DVSwitch and P25 Gateway via USPR.
Thanks
Tim
VK3TIM