It should handle the 350 watts no problem.  Just feel the top of 
the cavity at high power for excessive heat. And measure the loss 
in actual operation... 

You'll notice more "broad-band stuff" (more transmitter sideband 
noise from the PA Output) at the front end of your receiver... so 
you'll want to be sure your receiver has decent front-end protection 
and specs. 

The "Mental" break-point for increasing power is probably in 
the 50 to 110 watt level. At x-amount of a power level increase 
you really have to deal with protection. Power supplies need to 
be higher capacity, cable leakage is a much more serious issue, 
antenna type and reflected power are less forgiving and of course 
the power amplifier operation is a "no free lunch" technical 
requirement. 

When you increase the Tx power... pretty much all the other 
equipment requires more consideration and attention to the same 
scale. 

So a repeater output within the 45 to 120 watt range seems to 
be the typical target power level. Just depends on the equipment 
you have in place, your resources, some common sense and a lot 
of skeptical opinions. 

s. 

> "Mel Farrer" <[EMAIL PROTECTED]> wrote:
> OK, so I need to boost the power of my repeater from the 25-30 watt
> level and went to the Telewave website and found the power rating of
> the duplexer at 350 W.  I can generate up to 350 watts with my FET
> amplifier and it is clean.  I can also adjust the power easily to 100
> watts.  My thinking is run it at the lower level and do the field
> tests to see what improvements the 6 dB has made vs the 10 dB I could
> run.  Comments appreciated.
> 
> Mel, K6KBE
>

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