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Re: [Amps] IMD test question

To: <amps@contesting.com>
Subject: Re: [Amps] IMD test question
From: "k7fm" <k7fm@teleport.com>
Reply-to: k7fm <k7fm@teleport.com>
Date: Wed, 1 Aug 2012 20:51:14 -0700
List-post: <amps@contesting.com">mailto:amps@contesting.com>
There are a few hams on the West Coast who have marvelous antennas and 
"sufficient" amplifiers that have significant IMD.  These hams happen to 
have the strongest signals and also have "followers" who are dependent upon 
the large signal.  If you mention to the "big signal" that he is splattering 
or suggest his signal is not clean. You are attacked by his lemmings who, 
without any support assert that your receiver is overloaded and you do not 
know what you are doing.  No matter what you have used, or how careful the 
analysis, you are at fault because their fearless leader could not be at 
fault because he has the strongest signal into Europe.

I mostly stay silent now because it is not worth the battle.  However, when 
I tune around and note a signal with very little imd, I appreciate it.  I 
remember a few years ago, a since deceased ham had a 4CX1500 linear 
amplifier and the quality of his signal was stunning.  I miss listening to 
his signal.

For those who worry about IMD and how to monitor or improve your amplifier 
IMD, I salute you.

73,  Colin  K7FM 

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