RF Gain problem

Well it does lower noise untill you can't hear anything that is not close however the squelch simply sets a level limit with the RF gain turned up that kills anything BELOW what you have the squelch set for. The Squelch on AM/SSB is a nice addition but is not realy needed.

On FM radios the gain of the receiver is very high and you will hear a rushing noise that is why all FM radios have squelch controls on them
FEW if any have a RF gain .

 

The RF gain usually stays all the way up to hear weaker signals.Then adjust the squelch just above the static level.
Or lower the RF gain when you have someone with a really loud radio running near you.
The RF gain adjusts the receive level of the radio..

 

The RF gain does not effect receve level RF gain only controls the gain in the RF ( first stage ) Unless you turn it almost off or to the point background noise cannot be heard it will have little effect on what you can hear ....

The squelch just sets the MIN level of what you can hear NO MATTER WHAT MODE .....

The AUDIO gain is what you use to control how loude someone is.

On the OTHER end is the use of PREAMPS I have them gor all bands If used corectly will allow you to hear very weak stations ....

 

Most standard CB radios i have never seen an audio gain control..
RF gain and mic gain yes...

 

I have never really understood the difference between the squelch and the RF Gain myself. I can tell you that dialing back the squelch, cuts off noise and weak signals/farther away stations. Turning down the RF gain quiets some of the noise while still allowing weaker signals to be heard yet has little effect on stronger signals.

Some of my radios from a few years ago have the RF gain disabled. Wires removed from the control and soldered together. New wires were run from the control to the positive side of the PA jack and to the positive side of the external speaker jack which gives a variable talkback which can be turned down or turned up as needed.Some techs charge 50 bucks for that!!!!!!

Now everyone that reads this has to send me 25 bucks for a variable talkback.

 

It called VOLUME and it controls the audio gain/level on receive.

You use a squelch to quite background noise the only time a RF gain control needs to be used is on VERY STRONG signals PAST the point the squelch will work.

I can't remember the last time i needed the RF gain to help the squelch do it's job.

Most HAM radios you have to go into a menu to change the RF gain but almost all have a squelch which works on all modes.

Typical HAM radio with Vol/Squelch control RF gain is in a menu ....

 

Got ya! The only time i turn down the RF gain control is if i have someone real close and the signal is too strong to understand them due to over modulation i guess...

 

YEP not really overmodulation but OVERLOAD and to the user that does not matter. And this is why it is found on MENUs not on the front of most ham radios.