I am a relatively new ham, and haven't joined any club yet or participated in any nets. I have, however, hit a repeater just to know I can do it. I was told my sound was scratchy (no surprise there) but I want to hear how bad it is. I tried listening to myself from a second radio, but didn't hear anything.
My setup: A BaoFeng UV-5R connected to the antenna through a 25 ft cable. The antenna is a Tram 1185 Amateur Dual-Band Magnet Antenna or something similar, and is mounted on my roof about 20 ft above the ground. I'm broadcasting at 5W, and I know the radio is set up correctly because I've had people respond to me.
What I did: In the evening when the repeater was free, I keyed up on the BaoFeng, while listening to another 5W handheld with a rubber duck antenna nearby. The second radio didn't make any sound until I stopped broadcasting, then both radios played the beeps from the repeater indicating the end of broadcast. This is on the 2m band, and the repeater has a 600kHz offset.
What I think is going on: My guess is that my broadcast is so close to the second radio that it is hurting my SNR to the point where the second radio can't isolate the signal on the frequency it's listening on. Is that because my cheap BaoFeng is transmitting spurs or other out-of-band noise? Is it because the other handheld isn't filtering out noise well enough? Is this something common when radios are so close, or is it specific to my equipment/setup?