At 12/21/2004 10:09 AM, you wrote:
>John,
>
>Since I am the "guy running the IRLP node" you refer to, I thought I
>might take a moment to reply.
>
>The equipment now consists solely of Motorola GM300's, not amateur
>grade equipment. For the last six months or more both the 2m and
>440 transmitters have had large cavity filters in place. I believe
>you may still be thinking of the original experimental equipment used
>for proof of concept. The 2m cavity is a Sinclair 10" diameter
>unit. As for the deviation I have measured it with a Motorola Model
>2600 service monitor at 6 KHz, about the same as other repeaters in
>this area.
Just curious as to why you (& the "other repeaters" in your area for that
matter) run more than the almost universally-accepted NBFM standard of 5
kHz peak deviation? At 6 kHz, I think even 20 kHz channel spacing begins
to experience adjacent-channel interference.
I say "almost" because here in SoCal 4.2 kHz is the standard on 2 meters in
order to get 15 kHz spacing to work right.
Bob NO6B
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