And just so everyone else who happens to read this thread knows, yes, I agree that it is best to have the right test equipment to check your work when adjusting a radio, but it can and is done without an oscope/spectrum analyzer/ or frequency counter etc... on many occasions if you know what you are doing. Want to know if you are over modulating? Have a friend sit close by and listen while you do it. Want to know if you are not staying on frequency? Have them check above and below for bleed over. I mean come on, if an oscope is the only way to do it right, then how many people who have tuned a radio and did a good job without one "didn't know what they were doing?" Making mistakes has side effects which are detectable in the finished product (your audio on the other end) When you get reports of distorted audio, that's when you go find an oscope if you don't have one to see what's going on, and when you hear that you are bleeding over, that's when you hook up a spectrum analyzer to see what the signal is doing.
What I did was simple. I went online, found out which pot was the modulation pot, bought a powermic because it had echo and talkback built in, and started adjusting them both together while I had a friend sitting close by listening and giving me feedback. When the audio started to distort, I backed it down until it was good, clean, and crisp on the other end, and then I took it to 2 respectable cb shops and had them verify my work for peace of mind, and yes I watched while they tested. After multiple contacts at a multitude of ranges, all I have heard is how good this little compact radio sounds.
If you have oscopes and spectrum analyzers sitting on the shelf, then great, use them, but don't tell someone else that their work is junk because they didn't use one, and especially not before you've had a chance to hear it for yourself.
