T4A01 Which of the following is true concerning the microphone connectors on amateur transceivers?
A. All transceivers use the same microphone connector type
B. Some connectors include push-to-talk and voltages for powering the microphone
C. All transceivers using the same connector type are wired identically
D. Un-keyed connectors allow any microphone to be connected
- B. Some connectors include push-to-talk and voltages for powering the microphone
- The microphone connector of a transceiver is likely to include push-to-talk connections and also supply voltage for powering electret-style microphones. The wiring of the connector varies for the different manufacturers, so check the connections before trying a new microphone. [Ham Radio License Manual, page 5-5]