I have programmed hundreds of these. The radio may be receiving, but the speaker may be muted. If using a hand mic, have the mic "off hook" or ungrounded and try again. Does the front light flash while the radio is receiving? This indicates the radio is "hearing", just not passing the audio to the speaker. Is there something plugged into the audio jack in the back? Let me know. In 20-30 minutes most shops familiar with Vertex will know exactly what is happening.
Transmitted Error Count 4734440
Ack Rcv failure Count 15269951
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