I'm going to do the process of elimation again tomorrow. I did remove the amp, however I did not bypass the duplexer's, and with just the exciter at 5 watts, I don't get anything, and out the duplexer is right about 3 watts, so hard to see anything. As for hearing on 133.300 it can be heard more than three miles from the repeater by another user on his IC 706. I've gathered that it is mixing somewhere, with something, but I'm not sure what. The only consideration for changing, would really be the transmiiter, and that is to remove the Vocom amp, as I really don't need 200 watts to begin with, and I'm not really sure if it is completely resonant at 145 as it was designed for 146 Mhz, and Vocom has no information on the amp, and stated it was built before any of the current employees was there.
Mathew
Bob Dengler <[EMAIL PROTECTED]> wrote:
At 7/6/2005 07:55 PM, you wrote:
>I'm looking for something to replace this repeater. I'm not sure if
>it is the Vocom Amp, Antenna, Exciter or just plain messed up. I'm
>told the GE Mastr II's are easy to convert. How true is this. Does
>any one have one lying around. Or who has what available. Must be
>price competative, as I've spent more than I should have. I've been
>through this repeater a dozen times today, thought I had it cured, but
>then it starts back up with interference on 132.950, then I find if I
>goto 133.300 I can hear the repeater just as if it were on that
>frequency.
When you say you can "hear" your repeater on 133.300, do you mean just
locally or can someone a mile or more away hear it? Locally, you will
spurs 80 or more dB down from your carrier (-80 dBc). These are of no
concern as they won't be detectable more than a mile or so away from your
repeater.
The G.E. Mastr IIs are fairly easy to convert, as are the MVPs (the
portapeater I showed you is an MVP). However, I think it would be easier
to just get your HiPro exciter cleaned up. If you have verified that the
spurs are coming from the exciter, you can put a pass cavity tuned to your
output between the exciter & amplifier & the spur problem will be fixed.
> So I am at a lost here. It's like it is riding along
>something, every so often it gets bad, but then it disappears and is
>gone for awhile.
Is this happening to the exciter output, or is this a separate problem?
Bob NO6B
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