Tone Squelch Question

Hi Al


Your Rig pictures under your profile are not coming up either (enlarge)


Cheers

Tone squelch and CTCSS are the same thing.

If you enable tone squelch on your radio you will not be able to hear anyone else....but they will be able to hear you.

The idea of tone squelch is if your having a conversation with another person and both of you's have tone squelch enabled and set to the same sub audible frequency you and the other person you are talking to will not be able to hear anybody else unless they can enable there radio and set the sub audible frequency that you's are using.

It does not stop other people who have not got it enabled to hear you.

A lot of commercial repeaters and radios us it where there are multi users on a single frequency....it will not a low everyone to talk at one.

And I am strongly against people using tone squelch systems on UHF CB.

The reason i don't like tone squelch on UHF CB is because if two people are talking to each other who have tone squelch enabled and another person needs to get in contact with them for an emergency they will not be able to hear them.

Example 1:-
Two people are traveling in convoy using UHF with tone squelch turned on and the person at the back has a problem with his car/caravan...lets say a wheel on his caravan is wobbling and I'm going the other way and I see he has a problem that he has not picked up on, so I jump on the UHF and find their using channel 18....really strong signal....... so I put out a call to warn them and no reply, try again no reply.... perhaps their ignoring me....oh well their bad luck.
I get home that night watch the TV news and find a caravaner has been killed...I see the picture and guess what it's the same caravan I was trying to call....next day read in the paper about it and find out a wheel on the caravan had come off causing the fatal....

Example 2:-
I'm the one towing the caravan with the wobbly wheel...having a wow of a time looking forward to the two week trip with our good life long friends with their caravan in front of us......joking on the UHF....round a bend....and all I can see is a big white light, a guy with wing and a set of gates.

Example 3:-
I'm out bush walking by my self...took the UHF handheld for a bit of safety and I have a fall and break a leg...I grab the UHF and find some people on channel 28 who are close by...I put out an emergency call and no reply..I try for another 4 hours until the battery goes flat.....two days later a search party find me in a bad way......the people on channel 28 had tone squelch turned on so nobody would disturb the friendly conversation.

Thats why I against tone squelch systems on UHF CB.

Selcall works a bit different, you can have you radio receiving everyone and your mate gives you a call....you can't hear him due to to many other people using the channel....so he selcalls you and your radio detects the selcall and alerts you that your friend is calling you or you can have the radio squelched so it will only receive when it receives a known selcall.

Selcall is an alert system notifying you that someone is trying to call you when you are away from the radio, volume turned down or squelch turned up.

Selcall does not do anything once you are talking, tone squelch send a sub audible tone when you talk enabling the other radio allowing him to hear you......It should be called selective hearing not tone squelch.

Regards Richard

OOPS! "The reason i don't like tone squelch on UHF CB is because if two people are talking to each other who have tone squelch enabled and another person needs to get in contact with them for an emergency they will not be able to hear them."

Should of read..
"The reason i don't like tone squelch on UHF CB is because if two people are talking to each other who have tone squelch enabled and another person needs to get in contact with them for an emergency they will not be able to hear the person who is trying to contact them."

Thanks Robin,Will call you soon !


Cheers