[PPRAANet] VHF Repeater spacing

[John Bloodgood]

Here are the plans:

https://www.ccarc.net/wp-content/uploads/2020/03/CCARC_FUP_420-450MHz_revd.pdf

https://www.ccarc.net/wp-content/uploads/2020/03/CCARC_FUP_144MHz_revB.pdf



John Bloodgood, KD0SFY

From: Rex Ishmael<mailto:wd0ajg at gmail.com>
Sent: Wednesday, June 9, 2021 7:34 PM
To: charles berry<mailto:n7chs at yahoo.com>
Cc: VRC Main Mail List<mailto:w7pxl at valleyradioclub.org>; ppraanet at mailman.qth.net<mailto:ppraanet at mailman.qth.net>
Subject: Re: [PPRAANet] VHF Repeater spacing

That covered 2 meters but there is one more caveat.  On UHF some states
pair up and some pair down and now I am seeing Colorado doing both
depending on where in the UHF band?

WD0AJG


On Wed, Jun 9, 2021 at 6:57 PM charles berry via PPRAANet <
ppraanet at mailman.qth.net> wrote:

>  Thanks for responding. I'm just trying to put a time pespecitvie on
> channel spacing. Oregon is now moving towards 12.5KHz spacing.  Thanks,
> Chuck
>     On Wednesday, June 9, 2021, 05:45:31 PM PDT, Bob K0NR - email list <
> list at k0nr.com> wrote:
>
>   We can always count on the ham community to embrace a standard. Well,
> actually multiple standards 😁
>  Dave has it correct (Colorado uses 15 kHz but other states may be
> different).
>
>  I wrote an article that goes a bit deeper on the topic if you are
> interested.
>  See https://www.k0nr.com/wordpress/2020/08/simplex-channels-2m/
>
>  73 Bob K0NR
>
>  On 09-Jun-21 6:38 PM, WA6IFI wrote:
>
>  Chuck,
> Repeater channel spacing varies from state to state. The original spacing
> is 30 KHz. As the band became more crowed, two camps emerged. One camp
> chose to split the existing band plan in half and use a 15 KHz channel
> spacing to get more repeater pairs. However, the occupied channel bandwidth
> of a typical FM repeater is 16 KHz. This can cause adjacent channel
> interference problems which is why many state frequency coordinators, like
> Colorado, require minimum distance between adjacent channels.  Other states
> decided to get more channels be going to a 20 KHz channel spacing. This
> forced some repeaters to change frequencies to conform to the new band
> plan. The 20 KHz spacing practically eliminated the adjacent channel
> problem. New Mexico and others adopted the 20 KHz
> Spacing.
>
> So, the answer to your question depends on what state you are in.
>
> Sorry for the long answer to an apparent simple question.
>
> Dave Novotny, WA6IFI
> Chairman, Cheyenne Mountain Repeater Group
> 719-439-9077
>
>
>  On Jun 9, 2021, at 6:05 PM, charles berry via PPRAANet <
> ppraanet at mailman.qth.net> wrote:
>
> If I recall correctly repeater spacing during the 80's was 30KHz. When
> did spacing become 20KHz?  Thanks, Chuck N7CHS
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--
Rex
My thoughts: www.ishmaels.net/blog<http://www.ishmaels.net/blog>
email: wd0ajg at gmail.com
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