w9mwq wrote:
>
> Ok, I know this sounds silly, but my repeater is now hearing better
> than it transmits. Here's the setup, the the issue. I have a
> Maggorie (no comments) HiPro transmiitter running 2 watts into a
> Vocom Amp running 160 Watts into the duplexer, 130 out to the
> antenna, fed with 7/8" hardline into a Diamond Dual Band Antenna at
> 92'. VSWR is 1.1:1, with 130 watts forward and 1/10 watt reflected
> at an impedance of 52 ohms, (MJF 259).
>
> The receiver is a GE Mastr Pro ER-41 series receiver, tied to an ARR
> preamp at 24 db going through a two of the DB 4001-1 for filtering
> and finally into a set of TX-RX Duplexers, 3 cans pers side.
>
> I used to be able to hear the repeater nearly full scale for about
> 40 miles with no problem. Recently at 20 miles away, it's barely at
> 1/4 scale on my radio. This has been noticable with several users
> on the system, and my mobile just got a new antenna, all set and
> tested fine there, and other repeaters there is no problem. I can
> hear users nearly 60 miles from the repeater, but they can't hear
> the system.
>
> Is it possible something could be wrong on the duplexer end of it.
> I get no decense on the system, and receive audio is ok quality at
> 60 miles, just less than full quieting.
>
> Any thoughts. Mybe just propagation.
>
> And the 160 watts from the Vocom amp was as low as I could go before
> I began to cause havick, so it does not like lower power.
>
> Mathew Thanks!
I more suspect either the Maggiore exciter or the Vocom amp are going
somewhat spurious and not all of that power is on freq.
--
Jim Barbour
WD8CHL
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