Feature #11931
open
Added by Ferrel Wiley 22 days ago.
Updated 8 days ago.
I read the instructions above:
Yes
Description
Please allow using the CTCSS tone code 105.0 for US NOAA weather radio channels.
This will allow scanning NOAA Weather and hearing only when alerts are activated.
- Subject changed from NOAA CTCSS Tone to Custom CTCSS Tones
This is something each individual driver will have to support, and few do. CHIRP is focused on two-way communications and thus uses the standard set of tones by default without the ability to enter custom ones as the vast (vast) majority of people are using the standard ones. We can leave this open as a feature to support custom tones, which would facilitate your use-case, but I have no roadmap for when that would be available, FYI.
NOAA uses a 1050 Hz tone, not a "105.0 Hz" tone.
This is also not CTCSS at all, for that it would need to be 1. sub-audible and 2. continuous (!) under the transmission. The NOAA is alert tone is 10s, and then stops. You would only hear the tone and then your scanner will cut out.
Your request barely makes sense. I am not aware of any two-way radio supported by CHIRP implementing the "Public Alert" feature. And even if there was, this would be a simple on/off with a fixed frequency, not a "custom" non-CTCSS tone.
Okay, thanks.
I have my nicFW on my TD-H3 radios, which is running this feature as 105.0
as a CTCSS rToneFreq.
I didn't realize that since that is a custom firmware, it was converted
that to listen for the 1050 code, and then lock squelch open.
I apologize for offending anyone with my lack of knowledge in this matter.
For what it's worth, that feature was instrumental in giving us early
warning for one of the Georgia tornado warnings last month, while away from
our NOAA radio and before the warning sirens were activated.
Thanks again,¶
FerrelW
On Thu, Apr 24, 2025, 06:59 Eiben Scrood redmine@chirpmyradio.com wrote:
Yes, and higher-quality radios (like Kenwood) support a dual-watch WX alert function where they will switch to that channel when they here the 1050. Especially if you're using it for life-safety stuff, I'd recommend something better suited for it :)
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