At 10:01 AM 6/5/2005, Mathew Quaife wrote:
>Hi Dave, what the IRC wants to know is if there is any activity on
>the frequencies that you have been given to listen to. Then once
>you hear the activity, get the callsings of those using thre
>frequency. You are listening for various things, first coordinated
>activity, then uncoordinated activity, adjacent channel activity, do
>you get any operators that are close to you coming in on the input
>of the repeater pair that you are looking to use. The scanner
>recorder program they mentioned works great.
That part, I know.
> If you not very far from where your repeater will be, at home
> listening will be fine.
Unfortunately, I only have relatively low gain omni antennas here,
and not high at all. I'm dubious that I'll end up hearing anything useful.
> Once you have listened for a few weeks, then give your results to
> the IRC and they they will submit to the surrounding states and see
> if any of them oppose the pair they have given you. Hence warning,
> check the next pair above and below your given frequency within at
> least a 75 mile radius, if users use your system and they are
> beyond that point, they may cause intereference and it would cause
> you to be come uncoordinated.
Interesting point.. Another machine in town, on 2M gets users from
two, or sometimes three machines in different areas.
We sometimes hear the outputs of those machines, but we frequently
hear their users.
Part of this is an industrial design issue, in that high power on
your mobile rig is "sticky".
There's frequently a point where you must turn the power up, but
there's never a point where you must turn the power down.
So, mobiles tend to be left on high power.
>So listen on, above and below and see what you hear. If you are
>within 10 to 15 miles of the repeater site, and you have a good gain
>antenna, listening at home will be just fine.
Good tip on the adjacent freqs.
So I have six proposed pairs, plus two proposed control link
frequencies, plus 12 additional above and below pairs..
I'm adding in the receiver image frequencies, as well as searching
for any licensed services on the Nth harmonics below 1GHz.
Yikes.
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