I can answer a couple of your questions, but not all:
rtoplus wrote:
>
> Howdy all
>
> I finally have gotten around to setting up my TKR-850 UHF repeater.
> A few questions.
>
> I know that power is set up in software, however, I can't get but
> about 27 watts max out with the software set at max even on the test
> channels using LDF1 hardline, bird meter, and dummy load. Any
> ideas? I know there is a power adjustment, point VR1 on the PA
> board, but I can't for the life of me get it to do anything...do I
> need a special tool or something? I can't get it to move. Would
> this possibly be the problem or something else?
Those repeaters are rated for 25 W for continuous duty repeater service,
so it is making rated power. In any case, I wouldn't run it beyond what
your getting.
>
> Question 2...Initially, the power out was fluctuating
> wildly...jumping back and forth. I tightened up the screws on the
> power transister and all the screws on the board and it seems to
> have stabilized. Is there any thing else I should check to verify?
Make sure all the connectors are tight, and you've got good ground
conductivity between any two points where two grounds touch, ie, where a
board screws down to the chassis, etc.
>
> Question 3...The CW ID turns itself on every "X" minutes regardless
> of how I set it in the software...am I missing something? I don't
> want it to ID unless there is activity on the repeater.
>
> Question 4...to float charge a battery, the service manual refers
> to "shorting the charge land near R61". Is this the 2 little traces
> on the board? Should I just solder a jumper across these 2 little
> pads?
Can't help you on those, sorry.
>
> Question 5...anyone have any experience using these units in the 440
> MHz range? I plan to use it in the 460 MHz range, but I was curious.
I know of one right now on the low end of 442 Mhz-runs just fine.
>
> Question 6...I bought the repeater used so if I can't get the power
> up to the factory specs, would I be ok to turn the power down to say
> 5 watts or so and run an external amp or would I be better off
> putting in a 3 or 6 db pad between an external amp and the RF out
> from the repeater? I really want the repeater to work up to spec.
25 is all it's spec'd for in repeater duty. If you want more, yeah,
you'll have to put an external amp on it. But for GMRS (assumption on my
part), you're limited to 50W, and the difference probably won't be
enough to be worth it. I run abt 40-45 on mine (not a TKR-850, btw), but
after it gets out of the duplexer it's abt 25W anyway.
Make sure that you're measuring power before the duplexer, btw, cause
that's where the rated power is measured. If you're getting 25 W after
the duplexer, you're probably running it too high.
>
> Sorry for all the questions, but I'm new to Kenwood stuff and I'm
> trying to learn.
>
> Thank you
> Bob, GMRS WPVV845, Amateur KG4WAD, LMRS WPXC892
Hey, we do what we can!
--
Jim Barbour
WD8CHL
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