SOLVED: MMDVM_POG REPEATER LOCKING PROBLEM
Posted: Mon Jul 13, 2020 3:38 pm
Hello! The problem of the MMDVM_POG card that crashes and stops working after a certain time when receiving transmissions via RF was solved using a SI5351 module and an aduino pro micro to manage the module. The problem is related to the TCXO at 19.2 MHz. The entire circuit was removed from the txx and the generator signal was applied at point Tp61 of mmdvm_pog. The result with si5351 was excellent, showing stability and with possibilities of frequency correction. The SI5351 module in 12MHZ showed better performance and does not make the MMDVM_POG board have the problem of locking and improves the quality of the BER.
https://github.com/pu4ron/mmdvm_pog
Ronualdo - PU4RON
BRAZIL
https://github.com/pu4ron/mmdvm_pog
Ronualdo - PU4RON
BRAZIL