I've had the same problem caused by an old station master.
We swapped it out and the new antenna fixed the problem
I thought the original post mentioned the unit worked
fine on the same antenna split... which is not really a
true test... but it leads me toward the plunger arcing
test/tune first.
Testing the antenna with strong wind moving it around
quite a bit would be the best first choice for checking
the station master.
skipp
> Paul Kelley <[EMAIL PROTECTED]> wrote:
> VERY interesting. I have a VHF repeater that is doing the
> same thing (intermittent bouts of noise that sounds like a
> bad connection / micro-arc). I've been blaming it on the
> very old Phelps Dodge PD220 antenna... which it may well be
> in my case.
>
> What I am curious about here is that in both cases (the
> originator of this thread and my mystery system) it is fine
> into a dummy load, only acting up on the antenna. Do you
> still suspect the duplexer? Perhaps slightly different
> impedance of the antenna vs. the dummy load is enough to
> cause the problem to occur?
>
> I have a replacement for the antenna, but if that doesn't
> cure it I will have to start looking for new suspects!
>
> Paul N1BUG
>
>
> On Tuesday 23 August 2005 12:20 pm, skipp025 wrote:
> > Duplexer generated possibly...
> >
> > Reads like arc type pitting inside the duplexer. Take a
> > slow speed drill and run the duplexer tune shafts up and
> > down through their range a number of times. Hopefully
> > the plunger finger stock will knock off or polish
> > off/down the pit/arc spot enough. Don't know if Wacom
> > uses threaded tune shafts like Telewave and others...
> > but you get the idea.
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