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Re: [Amps] Power Transistor Question -- Thank You...

from [Steve Cook] [Permanent Link][Original]
To: <Amps@contesting.com>
Subject: Re: [Amps] Power Transistor Question -- Thank You...
From: "Steve Cook" <sccook1@cox.net>
Date: Mon, 19 Feb 2007 19:06:47 -0700
List-post: <mailto:amps@contesting.com> 
Team,

Thanks for all the interesting gouge on how transistor rigs are set up -- who 
da thunk it.

I will leave the adjust pot alone -- promise!

-S
  ----- Original Message ----- 
  From: Steve Cook 
  To: Amps@contesting.com 
  Sent: Sunday, February 18, 2007 4:39 PM
  Subject: [Amps] Power Transistor Question -- 2SC5125


  Looking at the specs for the 2SC5125 output transistors used in the ICOM 756 
series transceivers.  Spec sheet says they are rated for 80W output each or 
160W per pair up to 175Mhz.  

  Wondering why ICOM only runs them at 100W?

  There is an adjust pot that will allow the output to be turned up somewhat -- 
up to around 150W.

  What is the undesirable effect of turning up the power to say... 125W, if any?

  Thanks for any info you might have.

  Steve WG7K
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