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 Post subject: Barker & Williamson L-1000-A question...
PostPosted: Nov Mon 27, 2017 9:58 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Somers, CT
What does the NS neutralizing capacitor stub look like? length, distance from plate, and where is it located? I am gathering it was factory set and is not adjustable?

Pete

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 Post subject: Re: Barker & Williamson L-1000-A question...
PostPosted: Nov Tue 28, 2017 12:20 am 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: forked river , n.j. , usa
no picture of t-202 or c-212 or c-213. probably all located in the chassis box under the finals.


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 Post subject: Re: Barker & Williamson L-1000-A question...
PostPosted: Nov Wed 29, 2017 1:54 am 
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Location: Lincoln City, OR
Greetings to Peter and the Forum:

I don't know about the B&W, but Heathkit used to use a 2 or 3 inch stub of wire stuck through a hole next to the final tube. This was bent either toward the tube or away from it to achieve neutralization.

Regards,

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 Post subject: Re: Barker & Williamson L-1000-A question...
PostPosted: Nov Wed 29, 2017 8:13 pm 
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Joined: Nov Wed 17, 2010 11:14 pm
Posts: 68
Good question. All pictures show no evidence of a NS (neutralize stub) connected back to the RF filament transformer. I was curious in their design since it is GG 813 yet added neutralization for 10 meters only. If you find it, please post. Mybe it is mentioned but never used! Alan


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