Transmitting on guard

[Chris777]

There is a raging debate (surprise!) going on in the Flight Deck forum about pilots/controllers "transmitting on guard". Could some kind person explain what that means? I'm obviously not going to submit myself to the lions and ask this question in there!

[con-pilot]

Guard means the emergency frequencies, VHF 121.5 and UHF 243.0

When in a civilian aircraft and you are told to monitor 'Guard' means that you listen on frequency 121.5. You do not transmit on that frequency unless instructed to. Unless you have an emergency of course, then yell your head off.

[PingDit]

And.....
In the Air Force, we always set the radio's to TR&G = Transmit, receive and monitor Guard. We can transmit and receive on whatever frequancy we choose, but the radio is set up to also allow you to be able to listen out on 243.0MHz. You could, if you chose, then transmit on 243.0MHz.

Cheers,

PingDit

[Chris777]

Thanks guys! All clear now.