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Boat Forum / Electronics / July 2008VHF 22B and 83B channels?
I'm in Canada on the St. Lawrence and the Canadian CG broadcasts the weather on VHF 22B and 83B. What the hell is "B"? I've changed my VHF settings to International and Canadian and I don't hear anything. -- Geoff >I'm in Canada on the St. Lawrence and the Canadian CG broadcasts the >weather on VHF 22B and 83B. What the hell is "B"? I've changed my >VHF settings to International and Canadian and I don't hear anything. > >-- Geoff The "B" indicates that the CG uses the shore transmit frequency of a duplex channel for broadcasts. To receive these broadcasts, you should set your radio to the International or Canadian mode, not US. I think you want 21B, not 22B (at least, that's what they use here on the Wet Coast). The Coast Guard publication "Radio Aids to Marine Navigation" should list the coast guard stations and indicate the locations and channels of their transmitters. I would expect 21B and 83B to be included among the weather channels on any marine radio sold in Canada - at least, they have been on the radios I've used. When I want a weather forecast, I just scan through all the weather channels til I find a usable signal.  SignaturePeter Bennett, VE7CEI peterbb4 (at) interchange.ubc.ca GPS and NMEA info: http://vancouver-webpages.com/peter Vancouver Power Squadron: http://vancouver.powersquadron.ca > On Fri, 25 Jul 2008 20:06:58 -0700 (PDT), GeoffSchultz > [quoted text clipped - 26 lines] > GPS and NMEA info:http://vancouver-webpages.com/peter > Vancouver Power Squadron:http://vancouver.powersquadron.ca It actually is 22B and 83B and as I stated, changing the settings on either my Standard Horizon or Icom radios to International or Canada doesn't allow me to hear the weather broadcasts. I have 22A and 83A and find no mention of any 22B/83B. I suspect that they're talking about 22/83, but that doesn't explain why I can't hear the broadcasts when I typically have great reception/range. -- Geoff > and find no mention of any 22B/83B. I suspect that they're talking > about 22/83, but that doesn't explain why I can't hear the broadcasts > when I typically have great reception/range. That is because these channels are full duplex channels where receive and transmit are using different frequencies. The A and B designations are to indicate ship frequency (A) or shore frequency (B). If you set your radio to 'US' mode you'll get 22A only on channel 22 (transmit and receive on the ch 22 ship frequency) as this channel is use by the US coast guard to talk to other ships. If your VHF is set to 'International', then, if set to ch 22, it should receive on ch 22B and transmit on ch 22A. What is the make and model of your VHF ? Markus > > and find no mention of any 22B/83B. I suspect that they're talking > > about 22/83, but that doesn't explain why I can't hear the broadcasts [quoted text clipped - 12 lines] > > Markus I have multiple VHFs, but the one active in the cockpit with a RAM mic is a Standard Horizon GX2360S. I was just playing around with the radio and realized that on the base unit, that there's an A/B button that doesn't seem to have a counterpart on the RAM mic, which the mic that I almost always use. However, that wasn't the problem. I switched between USA/Canada/Intl and heard the broadcasts. I've done this multiple times to try to hear the weather broadcasts, and never heard anything. I have no idea as to why, but perhaps I was just very unlucky and always caught a dead section of the broadcast... -- Geoff >> On Fri, 25 Jul 2008 20:06:58 -0700 (PDT), GeoffSchultz >> [quoted text clipped - 35 lines] > >-- Geoff The latest edition of Industry Canada's applicable document shows that 21B is used for Continuous Marine Broadcasts in all areas of Canada, and makes no mention of 22B. (However, I have noticed that we don't always do what this document says...) With a radio in "Canada" mode, 22 will actually be 22A, as it is used by the Coast Guard to talk to the public - you would need to use the International mode to hear "22B". Note: on the West Coast, the Canadian Coast Guard uses 83A rather than 22A to talk to the public, to avoid potential interference with the USCG's use of 22A. I don't know if the CCG in other areas has also switched to 83A... SignaturePeter Bennett, VE7CEI peterbb4 (at) interchange.ubc.ca GPS and NMEA info: http://vancouver-webpages.com/peter Vancouver Power Squadron: http://vancouver.powersquadron.ca > The latest edition of Industry Canada's applicable document shows that > 21B is used for Continuous Marine Broadcasts in all areas of Canada, [quoted text clipped - 9 lines] > USCG's use of 22A. I don't know if the CCG in other areas has also > switched to 83A... before we get to much farther into this discussion, maybe we should move AWAY from Channel Designators, that are different between countries and numbering systems, and move on to FREQUENCIES, in Mhz. 21A = 157.050 Mhz 21B = 161.650 Mhz 22A = 157.100 Mhz 22B = 161.700 Mhz 23A = 157.150 Mhz 23B = 161.750 Mhz 83A = 157.175 Mhz 83B = 161.775 Mhz SignatureBruce in alaska add <path> after <fast> to reply > In article <3jdp84tbinukj2h7jq81epf8bac1viu...@news.supernews.com>, > [quoted text clipped - 39 lines] > > - Show quoted text - Bruce, I've been looking at these frequencies in my manual, and was surpised to see that I had to set the radio to International mode, as opposed to Canadian mode, to receive the B frequencies on my Standard Horizon radio that the Canadian CG broadcasts. -- Geoff >Bruce, > [quoted text clipped - 4 lines] > >-- Geoff I would expect to find 21B and 83B among the weather channels - no need to select "International" mode, then use the "normal" channel select scheme to find the continuous marine broadcasts. The channel list in my Icom 504 manual shows 21B (161.65 MHz) and 83B (161.775 MHz) as weather channels 8 and 9, respectively. I happen to have a Standard Horizon GX2355 manual handy, an its frequency list also shows 161.65 and 161.775 as Weather Channels 8 and 9. SignaturePeter Bennett, VE7CEI peterbb4 (at) interchange.ubc.ca GPS and NMEA info: http://vancouver-webpages.com/peter Vancouver Power Squadron: http://vancouver.powersquadron.ca > On Mon, 28 Jul 2008 16:25:58 -0700 (PDT), GeoffSchultz > [quoted text clipped - 24 lines] > GPS and NMEA info:http://vancouver-webpages.com/peter > Vancouver Power Squadron:http://vancouver.powersquadron.ca Thanks for the info. This just makes you wonder how many people can't/ don't follow the weather to the assigned frequency when they append "B" to the frequency. Are channels WX8 and WX9 fairly standard on VHF radios? If so, wouldn't it make sense to say "83B or WX9 on many radios"? It would be interesting to run an end-user test to see how well their current text is understood. -- Geoff >Thanks for the info. This just makes you wonder how many people can't/ >don't follow the weather to the assigned frequency when they append [quoted text clipped - 4 lines] > >-- Geoff The appropriate technique for finding weather broadcast channels may depend on where you are. Here in the Pacific Northwet (BC coast), I just dial through all the weather channels til I find a usable signal - that channel will almost certainly cover the area I am interested in. I could be highly scientific, and consult "Radio Aids to Marine Navigation", and the channel list for my radio, to find the most appropriate channel, but probably wouldn't get any better results. SignaturePeter Bennett, VE7CEI peterbb4 (at) interchange.ubc.ca GPS and NMEA info: http://vancouver-webpages.com/peter Vancouver Power Squadron: http://vancouver.powersquadron.ca > On Tue, 29 Jul 2008 02:49:27 -0700 (PDT), GeoffSchultz > [quoted text clipped - 23 lines] > GPS and NMEA info:http://vancouver-webpages.com/peter > Vancouver Power Squadron:http://vancouver.powersquadron.ca My point is that when the CG comes on 16 and tells people to go to 21B/ 83B to hear the forecast, it would be interesting to see how many people find the channel. You may be "highly scientific", but that doesn't mean that the majority of people are. If people can't follow the frequency change, and a small change in the text could solve that, then they should look at solving the problem. Maybe it isn't a problem, but looking at it couldn't hurt. -- Geoff |
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