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Receiving Offfshore Weather Information via HF/SSB Radio
I was recently asked in another boating forum how to get weather
information while cruising offshore. Typically this would be done using either a sat phone or a SSB radio. It is a somewhat complicated subject, and the right answer depends to a certain extent on your level of expertise, and whether or not you have a ham (amateur radio license) or not. If there is sufficient interest I may turn this posting into a short magazine article. All rights reserved. The easiest, but arguably the least useful, is to listen in on the HF High Seas weather broadcasts which are offered in voice at different times and different frequencies. More information he http://www.docksideradio.com/SSB%20Voice%20WX.htm The Dockside Radio web site also has a great deal of other weather and SSB radio information: http://www.docksideradio.com/ The High Seas broadcasts are difficult to understand for the uninitiated and require some practice/experience in advance. Many people advise tape recording the broadcasts so they can be replayed as needed. Learning what times and frequencies have the best reception is part of the challenge for all HF/SSB communications. Some knowledge of weather systems is required to understand the terminology. Moving up the complexity scale, and yielding more useful/detailed information, is weather FAX (WEFAX) reception. There is software available for the PC which will decode, display and store FAX images. One of the more popular programs is called JVCOMM32. More info he http://jvcomm.de/index_e.html There are also dedicated, turnkey weather fax solutions from most of the major marine electronics dealers such as Furuno, etc. Interpreting the WEFAX images requires knowledge of weather system behavior and interpreting weather maps. The schedule of broadcasts and other information can be found he http://www.nws.noaa.gov/om/marine/radiofax.htm Last on the complexity scale is two way EMAIL transmission via SSB, generally requiring something called a PACTOR modem to encode and decode the digital signals. EMAIL allows one to request and receive customized GRIB (Gridded Binary) files which are highly compressed and very detailed data extracts from the global weather models. They are "gridded" because the data is for specific blocks by latitude and longitude. In addition to location you have the ability to specify forecast times, dates and information level. There are two services available for EMAIL: "Airmail" for those with a ham license, and "Sailmail" for everyone else. Airmail is free and uses ham radio frequencies, Sailmail requires an annual fee and uses marine frequencies. More information he http://www.sailmail.com/ http://siriuscyber.net/airmail/ Of course the EMAIL capability is also useful for keeping in touch with friends and family. The amateur radio service prohibits commercial messages of any kind. Last but not least, there are various weather routing services available, some free, some not. Chris Parker has a wide following among cruisers, especially in the Bahamas and Caribbean. You can listen in to his broadcasts for free, but personalized information is by paid subscription: http://www.caribwx.com/ |
Receiving Offfshore Weather Information via HF/SSB Radio
On Sat, 01 Sep 2012 16:03:46 -0400, wrote:
I am surprised that these days there is not a broadcast of NOAA RADAR images. I suppose that is what weather FAX is but that is 20th century technology. Since it can take as long as 10 or 15 minutes to receive a fuzzy black and white fax image via radio, and radar is very location specific, it might not be that timely or useful. Part of the standard image sequence however is a satellite photo which give a good visual of cloud cover and weather systems. You don't need a SSB radio to view the images - all of the are available on the internet: http://weather.noaa.gov/fax/marine.shtml That's very useful for getting some practice with the images in advance of actually needing them. I talked to Van Winkle at WBBH a while ago about why they didn't put their RADAR on a sub channel with ads around the edges but they didn't think it made business sense. I have no idea what the cost is of running a sub-channel but these days it is very easy to get local radar info on a web browser or smart phone. http://www.intellicast.com/National/Radar/Current.aspx?location=USFL0438&animate=true http://www.intellicast.com/National/Nexrad/BaseReflectivity.aspx?location=USFL0481&animate=tr ue |
Receiving Offfshore Weather Information via HF/SSB Radio
On Sep 1, 3:41*pm, Wayne.B wrote:
I was recently asked in another boating forum how to get weather information while cruising offshore. * Typically this would be done using either a sat phone or a SSB radio. *It is a somewhat complicated subject, and the right answer depends to a certain extent on your level of expertise, and whether or not you have a ham (amateur radio license) or not. *If there is sufficient interest I may turn this posting into a short magazine article. *All rights reserved. The easiest, but arguably the least useful, is to listen in on the HF High Seas weather broadcasts which are offered in voice at different times and different frequencies. *More information he http://www.docksideradio.com/SSB%20Voice%20WX.htm The Dockside Radio web site also has a great deal of other weather and SSB radio information: http://www.docksideradio.com/ The High Seas broadcasts are difficult to understand for the uninitiated and require some practice/experience in advance. *Many people advise tape recording the broadcasts so they can be replayed as needed. *Learning what times and frequencies have the best reception is part of the challenge for all HF/SSB communications. *Some knowledge of weather systems is required to understand the terminology. Moving up the complexity scale, and yielding more useful/detailed information, is weather FAX *(WEFAX) reception. *There is software available for the PC which will decode, display and store FAX images. One of the more popular programs is called JVCOMM32. * More info he http://jvcomm.de/index_e.html There are also dedicated, turnkey weather fax solutions from most of the major marine electronics dealers such as Furuno, etc. Interpreting the WEFAX images requires knowledge of weather system behavior and interpreting weather maps. *The schedule of broadcasts and other information can be found he http://www.nws.noaa.gov/om/marine/radiofax.htm Last on the complexity scale is two way EMAIL transmission via SSB, generally requiring something called a PACTOR modem to encode and decode the digital signals. * EMAIL allows one to request and receive customized GRIB (Gridded Binary) files which are highly compressed and very detailed data extracts from the global weather models. * They are "gridded" because the data is for specific blocks by latitude and longitude. *In addition to location you have the ability to specify forecast times, dates and information level. *There are two services available for EMAIL: "Airmail" for those with a ham license, and "Sailmail" for everyone else. *Airmail is free and uses ham radio frequencies, *Sailmail requires an annual fee and uses marine frequencies. *More information he http://www.sailmail.com/ http://siriuscyber.net/airmail/ Of course the EMAIL capability is also useful for keeping in touch with friends and family. * The amateur radio service prohibits commercial messages of any kind. Last but not least, there are various weather routing services available, some free, some not. * Chris Parker has a wide following among *cruisers, especially in the Bahamas and Caribbean. * You can listen in to his broadcasts for free, but personalized information is by paid subscription: http://www.caribwx.com/ Typically this would be done using either a sat phone or a SSB radio. I hope this isnt a stupid question, but dso you mean SSB CB? |
Receiving Offfshore Weather Information via HF/SSB Radio
On Sat, 1 Sep 2012 16:24:01 -0700 (PDT), "*e#c"
wrote: I hope this isnt a stupid question, but do you mean SSB CB? === No, the CB SSB frequencies are different from the Marine and Amateur Radio (Ham) SSB frequencies. Additionally, Marine band transceivers must pass a rigorous type acceptance testing/certification program. http://www.docksideradio.com/Simplex%20Channels.htm http://www.csgnetwork.com/hamfreqtable.html http://www.csgnetwork.com/cbradiofreq.html |
Receiving Offfshore Weather Information via HF/SSB Radio
On Sep 1, 11:26*pm, Wayne.B wrote:
On Sat, 1 Sep 2012 16:24:01 -0700 (PDT), "*e#c" wrote: I hope this isnt a stupid question, but do you mean SSB CB? === No, the CB SSB frequencies are different from the Marine and Amateur Radio (Ham) SSB frequencies. *Additionally, Marine band transceivers must pass a rigorous type acceptance testing/certification program. http://www.docksideradio.com/Simplex%20Channels.htm http://www.csgnetwork.com/hamfreqtable.html http://www.csgnetwork.com/cbradiofreq.html You probably have had to have a License in Canada for Marine Radios for awhile, but no one does. I dont, but dont sit there and blab on it while on the Lake. It would only be used for a serious Pan-Pan. A few years ago I was at the Owen Sound Salmon Derby. There was this Woman on there, just blabbering away as if the darn thing was a CB Radio. It was a little gross to be exact. Every 10 SECONDS she was calling another Boat to see if anything was biting. I wanted to wring her neck while she had the Key down !!!! BLEEEAKKKKKKKK..... |
Receiving Offfshore Weather Information via HF/SSB Radio
On Sep 1, 11:26*pm, Wayne.B wrote:
On Sat, 1 Sep 2012 16:24:01 -0700 (PDT), "*e#c" wrote: I hope this isnt a stupid question, but do you mean SSB CB? === No, the CB SSB frequencies are different from the Marine and Amateur Radio (Ham) SSB frequencies. *Additionally, Marine band transceivers must pass a rigorous type acceptance testing/certification program. http://www.docksideradio.com/Simplex%20Channels.htm http://www.csgnetwork.com/hamfreqtable.html http://www.csgnetwork.com/cbradiofreq.html I also used to run a Moonraker 4 at 51 feet. I could talk all OVER the place. Best ever was the Honduras from my place. |
Receiving Offfshore Weather Information via HF/SSB Radio
On 9/2/2012 1:20 AM, *e#c wrote:
On Sep 1, 11:26 pm, Wayne.B wrote: On Sat, 1 Sep 2012 16:24:01 -0700 (PDT), "*e#c" wrote: I hope this isnt a stupid question, but do you mean SSB CB? === No, the CB SSB frequencies are different from the Marine and Amateur Radio (Ham) SSB frequencies. Additionally, Marine band transceivers must pass a rigorous type acceptance testing/certification program. http://www.docksideradio.com/Simplex%20Channels.htm http://www.csgnetwork.com/hamfreqtable.html http://www.csgnetwork.com/cbradiofreq.html I also used to run a Moonraker 4 at 51 feet. I could talk all OVER the place. Best ever was the Honduras from my place. Oh the people I ****ed with having a cb with a magnetic antenna on my motorcycle... Nobody could figure out how I got out so far, and knew where they were and ****.. I was right behind them on my bike:) |
Receiving Offfshore Weather Information via HF/SSB Radio
On Sep 2, 1:56*am, JustWait wrote:
On 9/2/2012 1:20 AM, *e#c wrote: On Sep 1, 11:26 pm, Wayne.B wrote: On Sat, 1 Sep 2012 16:24:01 -0700 (PDT), "*e#c" wrote: I hope this isnt a stupid question, but do you mean SSB CB? === No, the CB SSB frequencies are different from the Marine and Amateur Radio (Ham) SSB frequencies. *Additionally, Marine band transceivers must pass a rigorous type acceptance testing/certification program. http://www.docksideradio.com/Simplex%20Channels.htm http://www.csgnetwork.com/hamfreqtable.html http://www.csgnetwork.com/cbradiofreq.html I also used to run a Moonraker 4 at 51 feet. I could talk all OVER the place. Best ever was the Honduras from my place. Oh the people I ****ed with having a cb with a magnetic antenna on my motorcycle... Nobody could figure out how I got out so far, and knew where they were and ****.. I was right behind them on my bike:) I freaked a guy out one day. He was sitting outside the Laundry Mat down in tennesee, on SideBand lwr 36, and he replied to my CQ, but wouldnt believe I was up here.lol |
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