[chirp_users] Open stock config-Noaa Weather

John Rice johnr at k9ij.net
Thu Sep 29 15:59:51 PDT 2016


Just an additional note to clarify the usage of the extra channels. Note 
that some are Canadian and the  other is depreciated.

Many NOAA Weather Radio receivers are also programmed for three 
additional frequencies; 161.650 MHz (marine VHF Ch 21B), 161.775 MHz 
(marine VHF Ch 83B) and 163.275 MHz. The first two frequencies are used 
by Canada for marine weather broadcasts. 163.275 MHz was used by the 
National Weather Service for earlier weather broadcasts and later for 
internal coordination in the event of a power outage but is no longer in 
active use.

John - K9IJ

On 9/29/2016 5:43 PM, Todd Bloomingdale wrote:
> ok Jim,
>
> What in the world is the PA and number  in the alpha supose to stand 
> for. and adding the marine channels into the NOAA is confusing to 
> others thinking there is new channels for NOAA on which those 
> frequencies should be under the marine and not under the NOAA Alert. 
> Just all very confusing.
>
> Todd Bloomingdale​-KC9LOX​
>
> Tomah, WI
>
>
> On Thu, Sep 29, 2016 at 5:33 PM, Jim Unroe <rock.unroe at gmail.com 
> <mailto:rock.unroe at gmail.com>> wrote:
>
>     On Wed, Sep 28, 2016 at 1:23 PM, Todd Bloomingdale
>     <tbloomingdale at gmail.com <mailto:tbloomingdale at gmail.com>> wrote:
>     > Chirp developers.
>     >
>     > Seems I have found a minor bug in trying to open the stock
>     config for the US
>     > NOAA Weather  frequencies. Tried opening the stock config to
>     import and I
>     > get a error and also the listed weather frequencies have some
>     frequencies
>     > listed that are not part of the NOAA system. Also the alpha tags
>     are messed
>     > up. Just wanted to let the developers know. Included is a saved
>     .csv of the
>     > weather frequencies that I pulled up and also a debug file.
>     >
>     > Todd Bloomingdale-KC9LOX
>     >
>     > Tomah, WI
>     >
>
>     Todd,
>
>     I have no issues opening the "NOAA Weather Alert.csv" stock config.
>
>     I know this stock config was recently reworked (by "recently" I mean
>     in the last year or so). I just did some quick research to validate
>     the frequencies and alpha tags and the following is what I found.
>
>     >From wikipedia (https://en.wikipedia.org/wiki/Weather_radio
>     <https://en.wikipedia.org/wiki/Weather_radio>)
>
>     <quote>
>     The "official" NOAA WX numbering scheme does not increase in frequency
>     order because the weather channels were created gradually over the
>     years. 162.55 MHz was at first the only frequency (so was thus WX1),
>     then 162.4 (WX2) and 162.475 (WX3) were added later to prevent RF
>     interference. The others mainly came into use in the 1990s in
>     less-populated rural, areas and as fill-in broadcast translators
>     relaying an existing station or sending a separate, more localized
>     broadcast into remote or mountainous areas, or those areas with
>     reception trouble.
>     </quote>
>
>     The following is from the NATIONAL WEATHER SERVICE MARINE PRODUCTS VIA
>     NOAA WEATHER RADIO page
>     (http://www.nws.noaa.gov/os/marine/wxradio.htm
>     <http://www.nws.noaa.gov/os/marine/wxradio.htm>)
>
>     <quote>
>     NOAA Weather Radio Frequencies
>     162.400 MHz   (WX2)
>     162.425 MHz   (WX4)
>     162.450 MHz   (WX5)
>     162.475 MHz   (WX3)
>     162.500 MHz   (WX6)
>     162.525 MHz   (WX7)
>     162.550 MHz   (WX1)
>     Channel numbers, e.g. (WX1, WX2) etc. have no special significance but
>     are often designated this way in consumer equipment. Other channel
>     numbering schemes are also prevalent.
>     </quote>
>
>     And also from the same page
>
>     <quote>
>     Many NOAA Weather Radio receivers are also programmed for three
>     additional frequencies; 161.650 MHz (marine VHF Ch 21B), 161.775 MHz
>     (marine VHF Ch 83B) and 163.275 MHz.
>     </quote>
>
>     So according to the above, the stock config looks fine to me.
>
>     Jim KC9HI
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-- 
John Rice  K9IJ
johnr at k9ij.net
Webmaster, Network Admin, Janitor

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