New Orleans Weather Fax 12788 Khz
- Thread starter Saint
- Start date
nice catch and decode!
I just decoded 3 weather facsimiles from NMG New Orleans on 12788khz upper side band. KP index was 11 same as yesterday. MLA 30+ active loop, RSP1b, SDRuno, and FLDigi is my setup. Short fades on the signal. Decent decodes. Signal peaked 10 S-units.
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Very nice decode.
Saint
Nice catch and decode. I just did get some marginal fax from New Oleans, what with hurricane Beryl and all.
8502.04 is where I parked. Usually Pt.Reyes comes in good bot not tonight.
Then switched over to 8414.90 and got some Navetext:
.24 HR FCST HURCN BERYL NEAR 13.9N 66.1W. MAX
SUSTAINED WINDS 115 KT GUSTS 140 KT. LITTLE CHANGE IN RADIUS
OF
TS FORCE WINDS. SEAS 12 FT OR GREATER WITHIN 180 NM
NE QUADRANT...150 NM SE QUADRANT...AND 120 NM W SEMICIRCLE WITH
SEAS OO 40 FT. ELSEWHERE WITHIN 17N62W TO 18N64W TO 18N68W TO
16N69W TO 12N67W TO 12N62W TO 17N62W...INCLUDING ATLC
PASSAGES...WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. WITHIN 19N57W
TO
21N60W TO 20N64W TO 18N62W TO 14N61W TO 14N58W TO 19N57W...
INCLUDING ATLC EXPOSURES AND IN PASSAGES...WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN E TO SE SWELL.
.48 HR FCST HURCN BERYL NEAR 16.0N 73.9W. MAX
SUSTAINED WINDS 95 KT GUSTS 115 KT. TS FORCE WINDS
WITHIN 120 NM NE QUADRANT...90 NM SE QUADRANT...40 NM SW
QUADRANT...AND 100 NM NW QUADRANT. SEAS 12 FT OR GREATER OVER
FCST WATERS WITHIN 210 NM E SEMICIRCLE AND 150 NM W
SEMICIRCLE WITH SEAS TO 42 FT. ELSEWHERE WITHIN 17N68W TO 19N73W
8502.04 is where I parked. Usually Pt.Reyes comes in good bot not tonight.
Then switched over to 8414.90 and got some Navetext:
.24 HR FCST HURCN BERYL NEAR 13.9N 66.1W. MAX
SUSTAINED WINDS 115 KT GUSTS 140 KT. LITTLE CHANGE IN RADIUS
OF
TS FORCE WINDS. SEAS 12 FT OR GREATER WITHIN 180 NM
NE QUADRANT...150 NM SE QUADRANT...AND 120 NM W SEMICIRCLE WITH
SEAS OO 40 FT. ELSEWHERE WITHIN 17N62W TO 18N64W TO 18N68W TO
16N69W TO 12N67W TO 12N62W TO 17N62W...INCLUDING ATLC
PASSAGES...WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. WITHIN 19N57W
TO
21N60W TO 20N64W TO 18N62W TO 14N61W TO 14N58W TO 19N57W...
INCLUDING ATLC EXPOSURES AND IN PASSAGES...WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN E TO SE SWELL.
.48 HR FCST HURCN BERYL NEAR 16.0N 73.9W. MAX
SUSTAINED WINDS 95 KT GUSTS 115 KT. TS FORCE WINDS
WITHIN 120 NM NE QUADRANT...90 NM SE QUADRANT...40 NM SW
QUADRANT...AND 100 NM NW QUADRANT. SEAS 12 FT OR GREATER OVER
FCST WATERS WITHIN 210 NM E SEMICIRCLE AND 150 NM W
SEMICIRCLE WITH SEAS TO 42 FT. ELSEWHERE WITHIN 17N68W TO 19N73W
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...i often hear this transmission and would like to decode it and noticed you use FLDigi...i have the TIVAR app for decoding radiogram programs...are these similar digital decoders and do you think i could use the TIVAR to decode the 12788 wefax broadcasts?
thanks!
TIVAR doesn't have weather facsimile ability. IF you must use a mobile device there are option like Wolphi's HF weather fax, blackcat systems hf weather fax, and maybe others I am not aware of.
I recommend using pc for decoding and not the acoustic method.
Reason:
Weather facsimile is black and white. It uses 2300 pitch tone for white and lower tones for black. If you talk alot, a dog barks, a tv is playing, fan blowing air, music playing, or any noise is going to ruin your decodes. You have to be totally silent and everyone else. Some smartphone microphones have decent sensitivity.
The SDR routed to FLDigi via virtual audio won't ever have that issue.
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Navtex is kind of resilient on a noisy band. Great catch Merlin!
...thank you so much for the excellent technical breakdown and software info, i will check these programs out, i seem to have seen reference made to them on this site👍
Neither will a receiver with an audio tap, plugged directly to mic in.
My Kenwood has 'FSK out', nothing more than a tap just before the volume control/Amp out.
Not a real good strong signal, fading in and out.
Decoding fax on 12788 USB
NEW ORLEANS-LOUISIANA-U.S.A. Monday 6:45 PM Local, Tues 1:45 AM UTC
Decoding from Fort Erie Ont. Canada
SDRplay RSPdx receiver, long wire antenna, SDRuno, MULTIPSK DECODER.
Decoding fax on 12788 USB
NEW ORLEANS-LOUISIANA-U.S.A. Monday 6:45 PM Local, Tues 1:45 AM UTC
Decoding from Fort Erie Ont. Canada
SDRplay RSPdx receiver, long wire antenna, SDRuno, MULTIPSK DECODER.
