CTCCS Tones

[hohman79]

I'm in the process of programming some vertex radios and wanted to add these tones to the following frequencies

462.5625 2 W
462.5875 2 W
462.6125 2 W
462.6375 2 W
462.6625 2 W
462.6875 2 W

The radio is digital and was curious if the following frequencies have specific tones assigned to them. Do I just plug these tones in with the frequencies? What is the advantage of the tones I assume to prevent interference with others using the same frequencies? Included an attachment for review. thank you all in advance for your assistance.

 

[a417]

I'm in the process of programming some vertex radios and wanted to add these tones to the following frequencies
<snip>

The radio is digital and was curious if the following frequencies have specific tones assigned to them. Do I just plug these tones in with the frequencies? What is the advantage of the tones I assume to prevent interference with others using the same frequencies? Included an attachment for review. thank you all in advance for your assistance.

This is straight from the wikipedia entry for CTCSS. It is used on analog systems, you appear to be working in digital.



Good luck, please don't assume things when it comes to programming radios. Just throwing things in there can backfire in a high profile way, well intentioned new folk can create havoc for established and sometimes high priority users. Example, crane company "picks number for their radio to work on", frequency was a municipal police department's repeater input. A full day of chaos ensued, many angry phonecalls and RDF people involved.

 

[nd5y]

I don't know what the screen shot is but it's not CTCSS and it's not paging. It looks like tones for some type of sound effects or alarm.

 

[wtp]

unless i see it wrong, a tone of 2100 hz would have you hearing a nice whistle that does not go away.
the real tones are under 300 hz and usually can't get through the circuitry of the radio, you don't hear them at all.

 

[hill]

No tones with digital.

I think we need some more information on this before we can answer.

If the frequencies are analog you would need the correct tone. If a different one is entered you won't hear anything.

 

[radiotweester]

As they've said above, Digital does not use CTCSS or Digital Coded Squelch, the closest relative is called the NAC. What you have a pic of is audible single tone generation. Normally used for repeater access or other special remote purposes.

I normally don't soap box, but the frequencies you have listed are FRS/GMRS, digital modes (P25/DMR/NXDN) are not legal for use in either service. Stick with analog and avoid pissing off other people who also use the freqs and in the case of GMRS, pay to do so.