The President Micro DNC-520 microphone, through a pin reconfiguration, is compatible with all CB radios that have a 6-pin connector. Press the PTT button to transmit. Speak with a normal tone of voice to a distance of about 5-10 cm from the microphone. Avoid transmitting for a long time. This could damage the CB radio. To limit the transmission time, some CB radios are equipped with the TOT (Timeout Timer) function.
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