[Amps] Ameritron al80a

[jeremy-ca]

Unwind about 4 turns and youve moved the resonance.

Carl
KM1H


----- Original Message ----- 
From: "Vic K2VCO" <vic at rakefet.com>
To: "Wayne Smith" <vo1ta.wayne at yahoo.ca>
Cc: <amps at contesting.com>
Sent: Monday, March 17, 2008 1:30 AM
Subject: Re: [Amps] Ameritron al80a


> Wayne Smith wrote:
>> I burned up the top of the plate choke on my al80a trying to load up
>> on 17m.Still loads up on the other bands. I am wondering if I could
>> replace it with the plate choke from the al80b which is available
>> from Ameritron. I suspect that they are the same.
> 
> The AL80B choke is designed to move the series resonance away from 17m. 
> It should work and avoid this problem. It wouldn't hurt to check it in 
> place with a grid dip meter, if you have one available. Temporarily 
> connect a direct short across it (amplifier turned off, of course) and 
> any resonance should be at least 1 mHz away from the ham bands.
> -- 
> 73,
> Vic, K2VCO
> Fresno CA
> http://www.qsl.net/k2vco
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