That could also be DCS (Digital Code Selection), where the number is a digital code burst instead of a low frequency audio tone. Does the same functionality as CTCSS tones, but differently.
________________________________________
From:
[email protected] <
[email protected]> on behalf of Greg D <ko6th.greg@...>
Sent: Saturday, February 12, 2022 1:57 PM
To:
[email protected]Subject: Re: [yaac-users] Close window vs exit
!!!!!
I've always wondered why there seemed to be a duplicate set of tones
(same tone, different selection index) in a number of the radios. Is
this why?
Greg KO6TH
Andrew P. wrote:
2. The NB checkbox (thanks for pointing out that I have to add that to the help files!) indicates that you are using narrow-band modulation (NBFM instead of FM); there is a not-very-well-used extension to the CTCSS tone indicator when reporting a frequency in a beacon or object that also indicates use of FM versus NBFM (capital 'T' versus lowercase 't' before the PL tone number).
