Monday, May 25, 2009 at 19:25
Forget 'selcall'! Your new radio will come with CTCSS (Continuous Tone Coded Squelch System) and possibly DCS (Digitally Coded Squelch). Both are useful if you are travelling in convoy and don't want to be interrupted by everyone else around.
I work as part of the PE staff at a school on the
Gold Coast and after a few incidents where instant communication was vital (but not available as we were outside) we decided to equip the 5 of us with 1W handhelds linked back to the main office. As the only person in the group with experience of UHF comms I was given the task of setting them up. I did this by choosing a channel away from 40 and then chose a DCS channel that was the same for each handheld (I had 104 choices). The only people who can hear us is ourselves and we don't hear anyone else because of DCS. The radios also had CTCSS but they were limited to about 20 channels and the slim possibility of someone being on our channel and also using the same CTCSS channel was higher but highly improbable.
This coded squelch system can work for one, or many channels - it's your choice and you can still scan for the other channels. If you make the channel you and your mates are using with DCS or CTCSS as your working channel it means that their communications will be preferred over all others.
The GME TX3220 has CTCSS as does the TX3420 and these are base models.
I use an older GME (the TX3400) which has a detachable head mount meaning I can put the base wherever I like. However, if given a choice today I would get this
The idea of putting the display and controls in the handpiece is a work of genius and surely so much safer.
BTW, our work handhelds are Uniden and I have to agree that sound quality could be much better.
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