On Sep 3, 2008, at 8:43 PM, kb4ptj wrote:

> hi i am looking for ge uhf solid state high power 88 splyt 200watts

There is no GE MASTR II (88-split indicates that you're looking  
specifically for a GE product) that does 200W at UHF.  The MASTR II  
Station/Repeater PA (solid-state as you requested) maxes out at 100W.   
In the Station/Repeater form, it's rated for 100% duty-cycle  
(depending on altitude and ambient temperature) at that power level,  
which is usually *plenty* for a good repeater.

Most of us run them de-rated to about 80W or so, in practice.  Minus  
duplexer, isolator, and maybe (hopefully not) feedline losses, the  
power that reaches the antenna is often quite a bit less.

You could run a lower power MASTR II solid-state PA into a modern 200W  
PA, but I doubt the few more dB from 100W to 200W is really going to  
produce a balanced repeater for 5W hand-held users or even 50W mobile  
users, unless you're planning on building multiple receiver sites and/ 
or REALLY work hard on *maximum* performance of your receive system.

Typically the only time the use of higher power PA's is required is in  
that type of application.  It often requires a very expensive duplexer  
capable of handling the higher power and also that provides enough  
isolation between transmitter and receiver frequencies at the higher  
power levels.

I haven't seen the usual "reminder" on the list lately, and they're  
too modest to remind folks:  Don't forget that the guys that host the  
Repeater-Builder list, Repeater Builder, Inc. "the company" do a nice  
job on MASTR II repeaters and they have parts in stock.  Have you  
talked to them about your needs?

See their commercial portion of the repeater-builder website at: 
<http://www.repeater-builder.com/custombuilt/index.html 
 >

--
Nate Duehr, WY0X
[EMAIL PROTECTED]



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