We bought 5 Mmdvm from the same seller. While everything was working fine, we tried many test modes over ssh and rx/tx was not working at all. Our friend Bert (DD5XL) helped us spot the problem.
I leave a photo of the card we received.
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This is a photo where our friend Bert showed us what should be.
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Adf7021 Schema
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All we had to do was to have a good phone repair shop remove these chips, turn them 90 degrees counterclockwise and connect them back, and it worked.
Finally, our friend Bert shared with us that on the day we informed him that we had found a solution, a different person reported the same problem. So some sellers can send this type of card. Don't let your card be wasted.
I would like to thank DD5XL again for its interest and interest.
TA2SKY
73s
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MMDVM_HS Hat hardware
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