> "Kevin Bednar" <[EMAIL PROTECTED]> wrote:
> Thanks Skipp. I believe the fella I'm getting
> them from has a manual available as well.
Great, the manuals are really a must have.
To cover the UHF MSR, you actually need all
three manuals (unless you have the microfiche).
The power supplies are only covered in the
VHF (green) manual.
> I was going to run it at about 80 watts
> instead of the full 110.
You'd do better to run 65 watts. I've not
had a derated UHF ~65 watt pa fail when
used with a circulator/isolator.
> They also have the factory duplexers with
> them, and I'm ASSuming they should tune
> down as well?
> Kevin
> K2KMB
>
Yes, if the duplexer probe kits are the 450-470
range units. Also check the duplexer for an
over re-entrant energy coupling problem. It
requires a spectral display with tracking gen.
I've found on a few MSR UHF 450-470 versions.
This will show up as an wider (broader) than
normal bandpass peak that doesn't seem to allow
both pass cavities in one path to completely
align as one peak. I've not yet seen this problem
with the T-1500 series of motorhead duplexers.
Lightning stricks might be one cause of this
problem, the duplexer operation will be less
than good enough. I've traced this issue to
3 different UHF duplexers sent in from various
(and different) east cost locations where lightning
is a regular event.
I'll stay with the west coast earth quakes
thank you.
A previous RB post mentioned a problem with the MSR
Receiver front end suffering damage from lightning
strikes. The msr receiver problem might be an
extention of the same duplexer damage event.
It does take a spectral display/graph to really
see the probe kit problem.
good luck
skipp
www.radiowrench.com/sonic
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