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Re: [TenTec] Bias Adjustment on Century 21

To: tom@hayseedhamfest.com, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] Bias Adjustment on Century 21
From: geoffrey mendelson <geoffreymendelson@gmail.com>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Tue, 16 Jun 2009 19:45:46 +0300
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
On Jun 16, 2009, at 7:42 PM, Tom at Hayseed Hamfest Co. wrote:

> Anybody out there know how to set the bias to the final transistors  
> in a
> Century 21?  I see the pot that adjusts the bias -- it's supposed to  
> set
> the quiescent current in the collector circuit to 6 mA.
> My question is basically where/how (in physical terms) do you measure
> this current?  The final amp is a sealed unit for all practical  
> purposes.

Have you looked in the manual? You can download it LEGALLY for free at:



geoffrey mendelson N3OWJ/4X1GM
Jerusalem Israel geoffreymendelson@gmail.com

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