Which two units share the whip antenna via the diplexer?

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Multiple Choice

Which two units share the whip antenna via the diplexer?

Explanation:
Diplexing a single antenna lets two different-frequency paths share the same whip by filtering and routing each signal to its own band. In this setup, the diplexer is arranged so one path handles the VU band and the other handles the FM band. When VU1 and FM1 are connected to those two paths, each signal is confined to its respective band and combined onto the same antenna without cross-talk. The other pairings would involve signals on the same band or configurations not arranged to use that diplexer, which could cause interference or require additional filtering. So the two units sharing the whip via the diplexer are VU1 and FM1.

Diplexing a single antenna lets two different-frequency paths share the same whip by filtering and routing each signal to its own band. In this setup, the diplexer is arranged so one path handles the VU band and the other handles the FM band. When VU1 and FM1 are connected to those two paths, each signal is confined to its respective band and combined onto the same antenna without cross-talk. The other pairings would involve signals on the same band or configurations not arranged to use that diplexer, which could cause interference or require additional filtering. So the two units sharing the whip via the diplexer are VU1 and FM1.

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