Hi Eric,
Thanks, I haven't taken the cover off yet, but I will. And yes the
typo demon got me on the duplexer it is a DB 4062, 6 cavity duplexer.
Regards,
Rick
--- In [email protected], "Eric Lemmon" <wb6...@...> wrote:
>
> Rick,
>
> You might check to see if the internal jumpers inside the VXR-7000
cabinet
> are single-shielded. I had a VXR-5000 UHF repeater that had
single-shield
> jumpers with gray jackets and no markings, and had a small amount of
> desense. Once I replaced all three jumpers with RG-400/U
double-shielded
> cable, there was no trace of desense. Perhaps Vertex tried the same
> money-saving trick on the later model. Check to make sure that all
shields
> and cover plates are installed, with no screws missing.
>
> I wonder if your duplexer has been mis-identified. A DB4026 is a UHF
> bandpass cavity filter, not a duplexer. You probably meant DB4062,
which is
> a six-cavity VHF BpBr duplexer.
>
> 73, Eric Lemmon WB6FLY
>
