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Re: [Amps] RF on audio using 374A

To: "Roger \(sub1\)" <sub1@rogerhalstead.com>, <amps@contesting.com>
Subject: Re: [Amps] RF on audio using 374A
From: "Carl" <km1h@jeremy.mv.com>
Date: Wed, 14 Sep 2011 09:19:47 -0400
List-post: <amps@contesting.com">mailto:amps@contesting.com>
----- Original Message ----- 
From: "Roger (sub1)" <sub1@rogerhalstead.com>
To: <amps@contesting.com>
Sent: Wednesday, September 14, 2011 1:58 AM
Subject: Re: [Amps] RF on audio using 374A


> On 9/13/2011 5:39 PM, Jim Brown wrote:
>> On 9/13/2011 7:16 AM, kc0hfl@cox.net wrote:
>>> Current set up Radio Flex 5000 driving the 374A
>> The problem is almost certainly at the Flex, and I'm guessing that the
>> difference is the additional power of the larger amp.
> 
> 
> I ran into something similar when pushing my DX-2sp to the legal limit 
> on 75 with the Yaesu FTDX5000MP.
> It turned out to be RF coming back down the feedline to the tower.  I 
> put a 5 core, 5 turn choke right where the coax reached the tower.  
> Absolutely no RFI since then.
> 
> 73
> 
> Roger (K8RI)


Glad to hear it wasnt a Pin 1 problem Roger (-;
Any comments on the Yaesu, good or bad?

Carl
KM1H

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