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Post by M1DOW » Tue May 01, 2018 9:59 pm


Looking forward to playing, have a Pi Zero w coming and a mmdvm board from China which I assume is a Zumspot of some description.

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Re: Newbie

Post by KD9JTV » Tue May 01, 2018 10:57 pm

Welcome. If your MMDVM is coming from China, it is commonly referred to as a ChinaSpot or JumboSpot. Be aware that if you flash/upgrade the firmware on the JumboSpot from 1.3.1 to 1.3.3, you will probably have to make major adjustments to your RXOffset. One guy posted on FaceBook that he had to set his up to over 3,000. I had to set mine to over 10,000 after flashing the firmware. Do an installation of the hardware and a full setup and test to make sure everything is working as expected, then if it doesn't respond to your radio after the firmware update, start adjusting the RXOffset.

Again, welcome.


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