[Collins] KWM-1 neutralization procedure

AI2Q ai2q at roadrunner.com
Sat May 21 19:00:18 EDT 2011


Yes, that's understood Ron, and I have neutralized many a rig over the 
years, but specifically there are three neutralizing caps on the KWM-1 and 
I'm seeking a specific procedure from someone who may have had experience 
with the rig.

== Vy 73, AI2Q, Alex


----- Original Message ----- 
From: "Ron Youvan" <ka4inm at tampabay.rr.com>
To: "AI2Q" <ai2q at roadrunner.com>
Sent: Saturday, May 21, 2011 6:21 PM
Subject: Re: [Collins] KWM-1 neutralization procedure


> Hi  AI2Q:
>
>> What is the best way to neutralize the (a) driver, (b) feedback trimmer, 
>> and
>> (c) PA of my KWM-1?
>
>> My late model KWM-1 has a screen-off slide switch as well as an RCA phono
>> socket on the chassis for the grid.
>
>> I am used to neutralizing by removing B+ from plates and screens, 
>> applying
>> drive, and adjusting for minimum output on my scope placed across (a 
>> 50-ohm
>> load) after peaking the pi-L network on the 6146s.
>
>> Any help or suggestions appreciated.
>
>   Scope or a receiver, or other sensitive measuring (indicating) device.
> (with everything up to normal operating temperature)
> -- 
>    Ron  KA4INM - Every HAM should have at least one desk MIC,
>                  it's the perfect place to hang the cans when
>                  CW is "arm chair copy." 



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