Foundations Of Amateur Radio

Foundations of Amateur Radio When you switch your radio on to start a radio fishing expedition you join all the other spectrum users across the planet. To be fair, you'll likely only become aware of some of those for the time that your radio is switched on, even if there are thousands around. One of the ways you can find other users is by ditting out "QRL?" in Morse or saying "Is this frequency in use?" into your microphone. This simple courtesy of checking to see if the frequency you're on is actually being used by someone, is part of your license. You're taught to do this and it's expected. What's not clear is what happens next. It's simple if you hear a callsign, or a "yes", but what if you hear nothing? Sometimes nothing means exactly that, there's nobody on the frequency, but that's not always the case. There's plenty of opportunity for the frequency to be in use and you still not getting a response back. Let's imagine for a moment that the frequency you're on is in use by two stations talking to