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Thread: FR4x4 default radio channels - what shall we use?

  1. #1
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    Default FR4x4 default radio channels - what shall we use?



    Hello Folks,

    With a continued move to add radio types from the basic CB radio where the common channel is #4, what channels might we default to for each type of radio. I'd then post that info on the RSVP / calendar entry creation form. We would not _need_ to stick to any channel, but these might be channels we'd use as we find them to be useful.

    In addition to channel, would be any privacy code or any other sub-configuration we should consider.

    CB: ??
    FRS: ??
    GMRS: ??
    HAM: ??
    Other ???

    Generally, CB channel 4 is our long used channel. I can see a change to this as other groups also use channel 4 - this has found us moving to a different channel mid-run to avoid chatter from the other group.

    For all of these radio types I would wish to find channels that are available to all radios of that type and might be lesser used (less interference with other users).

    What say ye?

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    Default Re: FR4x4 default radio channels - what shall we use?



    CB: 4
    FRS: 4
    GMRS: ??
    HAM: 146.520. (2 meter natl calling freq). On occasion this might be busy, Then we would decide to roll a couple steps either side.
    Other ??


    no ctss or other privacy codes. They can be almost impossible to change manually on many cheap Chinese radios without using software.
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    Default Re: FR4x4 default radio channels - what shall we use?



    Tom previously posted:
    "On occasion this might be busy"

    One of the points of this discussion is to lean to channels that are not expected to be busy - to save slight hassle to have everyone switch mid-stream. My pref is to settle on a channel that would (hopefully) be less busy.

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    Default Re: FR4x4 default radio channels - what shall we use?



    Jim previously posted:
    "One of the points of this discussion is to lean to channels that are not expected to be busy - to save slight hassle to have everyone switch mid-stream. My pref is to settle on a channel that would (hopefully) be less busy."

    Its not often busy from personal experience. Its also designed/designated as the preferred ham 2 meter simplex freq for starting conversations. Ham operators know this. They also enjoy chatting with others on said freq. SOTA AND POTA use this freqand hamms enjoy contact with them giving them points in their challenge.
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    Default Re: FR4x4 default radio channels - what shall we use?



    Could also do
    146.550
    or
    146.490

    either side of natl freq.
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    Default Re: FR4x4 default radio channels - what shall we use?



    Im not sure which channels are repeater channels for frs/gmrs but it would probably be good to avoid those.

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    Default Re: FR4x4 default radio channels - what shall we use?



    For the FRS channels, I feel like it would take trial and error to find a channel that other people just tend not to use. It also may just be a game of chance, with equal probability of other people being on any channel we pick. I wouldn't say no to ctcss so quick. Yes it's a pain when Chirp or some other software needs to be used, but if we commit to a dedicated channel with the addition of a ctcss code and use it for every run, the probability of someone else also being on that channel/code is infinitesimal due to the number of codes, and folks with programmable radios will only have to set it up once. Also, it is very easy to set up on some handhelds such as the Motorola T600s a few of us have picked up. Not sure how easy it is on actual FRS/GMRS radio unit
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    Default Re: FR4x4 default radio channels - what shall we use?



    Without any testing I'll nominate channel 6 for gmrs and frs. 1 and 4 have both been more frequently busy in my limited experience. In general I think 1-7 make sense as they are the lower power channels for gmrs and these radios seem to get out just fine. https://wiki.radioreference.com/inde..._channel_chart

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    Default Re: FR4x4 default radio channels - what shall we use?



    Shane, what ch were we on at Rainbow Falls?
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    Default Re: FR4x4 default radio channels - what shall we use?



    7 I think.

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    Default Re: FR4x4 default radio channels - what shall we use?



    speedkills previously posted:
    "Im not sure which channels are repeater channels for frs/gmrs but it would probably be good to avoid those."

    15-22 are the repeater outputs, but they're fine to use for FRS or GMRS simplex. I don't think there are many repeaters in the same areas as many jeep trails in CO, and even at my house where there are around 5 repeaters in range they are pretty quiet most of the time.

    I'd guess 15-22 would attract more people of the mantra; "more is better", leaving 1-7 less used. I've been trying to scan the band when I am out but I haven't been out on the trails much yet with these radios. Certainly if multiple groups are on these 5W channels they can be spaced a little closer before they start to bother eachother compared to 15-50W on 15-22. If one of the high power channels were to be particularly useful it would be before you arrive at the trailhead... if you wanted to try and catch up with people on the highway. You could recommend separate highway and trail channels in that case.

    It would be simpler to run without CTCSS and DCS codes. If it ever gets annoying in the future with chatter from other groups, the recommendation could always be revisited.

    EDIT: Reading back through this, there's a chance some folks may not realize that since the FRS/GMRS rule changes in 2017 the FRS and GMRS channel numbering have been standardized and are shared between services. If we want to recommend default GMRS and FRS channels, it makes a lot of sense that they be the same. If you are using an older GMRS radio this may not be the case but all of your channels will match up with an FRS channel.

    https://wiki.radioreference.com/inde...FGMRS_Channels

    Channels 8-14 are specified for handheald radios by rule, and would not be accessible by GMRS mobile radios (think wired mic and external antenna). These channels are also limited to 1/2 watt and may not make much sense to use as a default trail channel for vehicle to vehicle purposes.

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