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Simrad radio help

Old 09-12-2019, 08:51 AM
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Default Simrad radio help

I have a Simrad rs20 radio and I can't get it to allow all of the channels to be used. It goes from channel 17 straight to 24. I've set it to US, I've selected all channels, I've done a reset and still nothing works. Any ideas?
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Old 09-12-2019, 08:18 PM
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(Edited)
VHF Marine Radio Channels


fact-sheet-communication-vhf-marine-radio-channels-for-recreational-boaters-0025.pdf

Last edited by TTaxi; 09-13-2019 at 09:18 AM.
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Old 09-12-2019, 08:54 PM
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The problem is I'm going out daily over the Tillamook bar and the Coast Guard says to switch to channel 22A for bar conditions and I'm not able to get that channel.
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Old 09-13-2019, 09:17 AM
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My apologies, You definitely should be able to get 21A & 22A, although some of the new radios will apparently designate that as 1021 1022 now or soon.

Double check your radio is still set up to use USA channels set , as I believe INT and perhaps CAN will not provide them.

I'm going to delete my post above about no public access, though that is true on a few other channels..
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Old 09-14-2019, 12:30 AM
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Your radio is using the new chanel banks so the A's & B's are no longer used. Instead all the A's are now 1021 instead of 21A. So the cahnnel are still there just have a different name format.
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Old 09-15-2019, 08:08 AM
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The channel name "two-two-alpha" (22A) is still in use by the U.S. Coast Guard in their voice announcements made on 156.800-MHz (Channel 16) informing boaters that there will be a marine information broadcast on 157.100-MHz. I believe they sometimes also mention the frequency in Megahertz in addition to the channel designator, as in "one-five-seven-decimal-one-zero-zero Megahertz." However, that is probably of little value to a recreational boater using a recreational grade VHF Marine Band radio; they don't know much about actual frequency of operation, they just know channel numbers. A radio might not even display the frequency to the operator.

Although the Coast Guard website now refers to 157.100-MHz using the "new" channel designator 1022, I suspect that their use of the legacy channel number in their voice announcements reflects the general unfamiliarity of most boaters (and maybe USCG personnel) with the new channel numbering system.

The actual frequencies of "the new chanel [sic] banks" are not new. The numerical designator for the channel has just changed. There are really no "banks" of new channels. If anything, some channels seem to have disappeared in the new scheme.
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Old 09-15-2019, 08:40 AM
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Originally Posted by TTaxi View Post
Those links are to secondary sources. I prefer the source from the USCG NAVCEN website. See

https://www.navcen.uscg.gov/?pageName=mtVhf

Some of the information given in those secondary sources is misleading, particularly about radio watch-keeping

The primary source for information is from federal regulations, See

§ 80.310 Watch required by voluntary vessels.
https://www.law.cornell.edu/cfr/text/47/80.310

However, even that regulation is a bit confusing and out of date, as it suggests a voluntary radio-equipped vessel is obligated to monitor 2182-KHz, something the USCG itself no longer does. See CGSafetyAlert0817.pdf

The requirement for a recreational boat that has voluntarily-equipped itself with a VHF Marine Band radio to monitor 156.800-MHz (Channel 16) can be eliminated if the radio is a digital selective calling radio and the vessel is operating in GMDSS Sea Area 1.

Also, as far as I can find, there is no regulation that requires a radio watch be maintained on 156.450-MHz (Channel 09). The regulations suggest that Channel 09 can be used as an alternative channel for making calls to or listenting for calls from other vessels, but I do not see any explicit language that keeping watch on Channel-09 relieves the obligation to keep watch on Channel 16 for emergency or distress calls. Use of Channel 09 as a hailing or calling channels seems to vary by area, and in my area there is very little use made of Channel 09 as a hailing or calling channel.

In regard to what channels can be used by a recreational boat, Channel 06 can be used for intership safety communication. Of course, all the Public Correspondence channels can be used for establishing a link to a shore telephone with a marine radio shore station that provides those services, but this is almost never done anymore; cellular telephones have replaced that function for most boaters.

Last edited by jhebert; 09-15-2019 at 09:03 AM.
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