MMDVM DR-1x conversion tutorial DMR and ZUM board

 

http://ve1cra.net/main/zumspot.htm

 

Here how to built it and setup

https://www.youtube.com/watch?v=Hkokj61yaYI

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https://www.youtube.com/watch?v=B5G4gYDdJeQ

the above utube is from Craig W1MSG

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