Primary Systems 1 Practice Test

Which statement is true regarding transmitting on UHF and VHF using the PCL UHF/VHF key?

Pushing up transmits on UHF; pushing down transmits on VHF Pushing up transmits on VHF; pushing down transmits on UHF Pushing up transmits on both UHF and VHF The key does not affect transmission

Correct Answer:

Pushing up transmits on UHF; pushing down transmits on VHF

Explanation:

The main idea is how the PCL UHF/VHF key directs where your transmit signal goes. This two-position control routes the push-to-talk path to the selected radio band. When you push the control upward, the transmit path is connected to the UHF radio, so you transmit on UHF. When you push it downward, the path switches to the VHF radio, so you transmit on VHF. This design gives you quick, unambiguous control over which band you’re using and prevents both radios from transmitting simultaneously. The other possibilities would imply the wrong direction mapping, dual transmission, or no effect, which doesn’t match how the switch operates.

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