Marine Radiofax Weather Charts Via Shortwave Radio – WEFAX

Weather out over oceans?  That, and more.

More than international broadcast stations and amateur radio operators exist on the shortwave radio spectrum.  For instance, any non-broadcast signal that is not amateur radio is often lumped together into a category known as Utility Radio, abbreviated, UTE.  To dig deeper into UTE activity, you could check out the UDXF – the Utility DX Forum, located here:  https://www.udxf.nl/

Utility stations (UTE) are quite common, from marine (ships, fishing vessels, etc.), transoceanic air traffic (international passenger or cargo jets and other aeronautical trans-oceanic radio traffic), to military radio (weather, coordination, and much more).  UTE is a rich subdomain of the radio experience.

As an amateur radio operator, I listen to and monitor utility stations on shortwave, at times when not operating as an amateur radio station.  I check weather for air traffic or for marine traffic, because it helps me see the larger-scale weather patterns.

Sample Weather Satellite Picture via Shortwave

One of the captured weather images via shortwave radio.

Here is a video I made of my reception of weather charts via shortwave radio from radio station NMC, at Point Reyes, CA, using FLdigi software to receive these weather fax transmissions:

WEFAX 22.527 MHz on 2024 JUNE 14

This video is a screen and sound capture of my reception of weather charts and images by shortwave radio, from a station in California running about 4 kilowatts of RF power. This HF WEFAX (Weather Facsimile) service is on every day for ship (marine) weather dissemination so that ships out on the ocean can get weather charts and images not by satellite, but by receiving shortwave signals.

Below is a snippet from the published schedule from Point Reyes WEFAX Radio, callsign NMC, as follows:

22527 kHz – tune offset 1.9 kHz (see note, below)

UTC   WHICH CHART
----- --------------------------------
19:13 TROPICAL GOES IR SATELLITE IMAGE
19:23 WIND / WAVE ANALYSIS
19:33 96HR SURFACE FORECAST
19:43 96HR WIND/WAVE FORECAST
19:53 96HR 500MB FORECAST
20:03 96HR WAVE PERIOD / DIRECTION
-------------------------------------

The above snippet of the NMC chart transmission list is from the page, “NMC Point Reyes, Marine Radiofax Broadcast Schedule” found at:
https://weatherfax.com/nmc-point-reyes/

One of the captured weather images via shortwave radio.

One of the captured weather images via shortwave radio.

 

Here is a detailed description of the weather charts, and online access is at:
https://www.weather.gov/marine/radiofax_charts

Note: In the video, you see that I am tuned to 22.526 USB thus I was tuned to 22526 kHz USB, based on this: “Unless otherwise stated, assigned frequencies are shown, for carrier frequency subtract 1.9 kHz. Typically dedicated radiofax receivers use assigned frequencies, while receivers or transceivers, connected to external recorders or PC’s, are operated in the upper sideband (USB) mode using carrier frequencies.”

==================================
Source:

WORLDWIDE MARINE RADIOFACSIMILE
BROADCAST SCHEDULES
U.S. DEPARTMENT OF COMMERCE
NATIONAL OCEANIC and ATMOSPHERIC ADMINISTRATION
NATIONAL WEATHER SERVICE
April 12, 2024

https://www.weather.gov/media/marine/rfax.pdf

 


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Ham College 114


Ham College episode 114 is now available for download.

Technician Class Exam Questions – part 1
T1A – Purpose and permissible use of the Amateur Radio Service. Operator/primary station license grant, Meanings of basic terms used in FCC rules, Interference, RACES rules, Phonetics, Frequency Coordinator.

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George Thomas, W5JDX, is co-host of AmateurLogic.TV, an original amateur radio video program hosted by George Thomas (W5JDX), Tommy Martin (N5ZNO), Peter Berrett (VK3PB), and Emile Diodene (KE5QKR). Contact him at [email protected].

Amateur Radio Weekly – Issue 335

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IgrikXD managed to hit Texas and Colorado from the edge of the North Sea on several bands, which isn’t too shabby with a fraction of a watt.
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The RigPix Database
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The Matrix HAM Radio Community continues to grow
Come and say hello, a welcome awaits.
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1946 Packard car radio
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KH6WI’s Portable Amateur Radio satellite setup
Setup for working Amateur Radio satellites while portable and while doing amateur satellite roves.
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Amateur Radio Weekly – Issue 334

Amateur Radio Weekly

The gradual normalization of automated FT8
The one-man FT4GL DXpedition on Glorioso is ground-breaking.
AE5X

Ham Map
A map that shows WWFF, POTA, SOTA, and GMA references.
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QO-100 satellite ground station complete build
My QO-100 satellite ground station is built around my little Icom IC-705 QRP transceiver, it’s a great little rig and is ideal for the purpose of driving a 2.4Ghz transverter/up-converter.
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Noise management on Field Day
One bad apple can really be aggravating, so here are a few techniques you can use to keep the peace.
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CQ Pride special event June 7-17
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TX Factor – Episode 30

We’re back with our 10th year anniversary show!

Bob G0FGX demonstrates the Groundstation 2 from DX Patrol in the first of a two-part feature on operating via the QO-100 geostationary satellite. He looks at the hardware and software needed to achieve your first QSO at home or out mobile.
We visit the new QTH of the Sidmouth Amateur Radio Society in South Devon, UK and meet Dave Lee G6XUV who helped SARS to secure a derelict former sports social club from the local town council and renovate it into a community hub and club QTH.
Bob reviews the latest mobile transceiver from Yaesu – the FTM-500D and demonstrates the many advanced features of this versatile FM and digital rig.

Watch now via our website: txfactor.co.uk


Nick Bennett 2EØFGQ co-hosts TX Factor with Bob McCreadie GØFGX and Mike Marsh G1IAR. Contact the team at [email protected]

Strategic partnerships with public libraries by ham radio clubs: Updates

Since the previous blog post got out and syndicated via AmateurRadio.com, I’ve had inquiries about how to go about building an effective relationship with a local library system. Some clubs have already done this but focusing on emergency communications activities. The ARRL tends to call these “served agencies.” This may be with a local Emergency Management Agency, hospitals, area Red Cross agency, or local governments. As I’ve written here before, why not think of other organizations as educational “served agencies”? That might be a good start!

Back in January (2024), I led a Forum at the Capital City Hamfest in Jackson MS on developing strategic partnerships with public libraries. We had representatives from the Madison County (MS) Library System and the Director and Vice Director of the Delta Division of the ARRL on the Panel. Here is an updated slide deck of that Forum discussion. The interested reader might use this as a jumping-off point to take the ball and start dribbling (see last slide!).

Download PDF here.

Strategic-partnerships-with-public-libraries-by-ham-radio-Updates

Frank Howell, K4FMH, is a regular contributor to AmateurRadio.com and writes from Mississippi, USA. Contact him at [email protected].

Advice

ARRL made a comment in an update yesterday about some members “believe [ARRL] should be openly communicating everything [emphasis added] associated with this incident.” That’s not what this member has been suggesting. The update goes on saying “[authorities] […] have directed us to be conservative and cautious with our communications.” I really hate to belabor this, and I’m not trying to Monday morning quarterback the event nor sound condescending, but this is really a teachable moment for ARRL, for whoever may be listening. Here’s my advice, carefully outlined:

  1. Post updates daily, even if it’s a short update. Anything.
  2. Put a human face with the response effort. This can be quite simple: just post a two minute video every other day with someone on the leadership team or someone tasked with public relations to say “hello”, “this is what we’re doing today”, “these are the challenges we’re facing”, “we got this!, ” and “be patient”. Even add some snarky humor. This is not that hard to do, but it maintains and builds reputation capital and a rapport with the community and stakeholders. I’ve been amazed over my career and in my personal dealings in the online world how far a face, humbleness, self-deprecating humor, and falling on your sword goes in a bad or challenging situation. This isn’t going to silence irrational critics, of which there are plenty, but for 95% of the people out there, it works.
  3. Technical details which, if made public, may compromise the investigation are separate from details regarding the restoration efforts. Don’t stand behind an investigation, it just gives a sense of secrecy and a lack of transparency and frankness.
  4. Service restoration ETAs should be communicated from day one, and with each update. Even if an ETA is “we don’t know yet” or the ETA is in weeks, rather than hours or days, it’s much better than nothing.
  5. Enumerate what services are affected, as soon as the scope is known, and track them throughout the ongoing communications. Initially to the outsider this appeared to be just an LOTW outage. It turned out this also affected the phone system and various administrative systems used to provide other services and publishing of periodicals.

I honestly hope this is my last post on this. For ARRL leadership there are takeaways from this event beyond technical issues. Technical issues can be fixed with expertise, money, and time. Cultural issues are much more challenging.

This article was originally posted on Radio Artisan.


Anthony, K3NG, is a regular contributor to AmateurRadio.com.

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