BD6ISM The SMP818 has write-only software, and the K-line is functioning normally (typically used for writing to K6 and BaoFeng 5RH). However, when I tried to use it to write to the SMP818, it prompted a connection failure. But the walkie-talkie still shows "PC". What could be the problem?
BH2XIY I'd like to mention that the write-in line for the motorcycle is different from the one I have, which is an 818.
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