w9mwq wrote:
> I have a repeater with an antenna up about 60 feet in the air,
> Frequency of 146.925/146.325 minus offset. Receiever sensitity
> is .25 micorovolt at 12DB, seems to be purring along just fine. IFR
> show the receive to be on frequency. Here's the problem, there is a
> repeater about 50 air miles away, on the pair of 146.910/146.31o
> minus offset. There repeater is getting into my receiver, causing
> the repeater to key up. There is no pl on my repeater at this
> time. They sound like they are on sideband when they come in. I
> can goto the 91 machine, hear them talking, when they quit, the
> interference quits. I took my IFR and inserted a tone on 146.310
> into my receiver, it took 15 microvolts to open the squelch of my
> receiver. Is it my receiver, which is a Regency receiver, or is it
> the person transmitting on the other machine. I could see if it was
> the 91 machine if all it was doing was killing my receive, but it's
> actually keying up the repeater. SO my guess would be it would have
> to be the person talking on the 91 repeater. I hope I explained
> this right. Any suggestions. Thanks.
>
> Mathew
>
As others have said, the problem is users of the other system getting
into your receiver. You should notice that the problem goes away as soon
as the user unkeys.
Yes, the Regency receiver is a big problem. They are notorious for being
broad as a barn. A UHF repeater here used to be a Regency. I could bring
it up reliably from 30-35 miles away 10 Khz either side of frequency
with a 1W handheld! Find yourself a Micor or Mastr II receiver and that
should cut it down considerably. You'll never get rid of it altogether,
but you should be able to cut it down to where it's rare.
Our rptr on 146.625 has a 146.61 and a 146.64 rptr abt 50 miles away or
so. Our system is all Micor. Unless someone is right underneath one of
our receivers running a base station-type setup, we never hear anything
from them. Now the Michigan rptr 5 Khz away...
--
Jim Barbour
WD8CHL
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