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Re: [TenTec] 238 Manual Addendum (extra cap)

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] 238 Manual Addendum (extra cap)
From: Rodney Dewald via TenTec <tentec@contesting.com>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Tue, 22 Jun 2021 14:58:55 -0400
List-post: <mailto:tentec@contesting.com>
W3KRQ I REPLACED THE DISC CAPS WITH DOORKNOBS

Sent from Mail for Windows 10

From: Andy W3LI
Sent: Tuesday, June 22, 2021 1:58 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] 238 Manual Addendum (extra cap)

​Hi Guys, just took a look at the back of my TT 238B tuner. The CAP is between 
the external wing nut and ground. Never used it as it came out of the box.????

Maybe info will help.

Andy... W3LI

________________________________


If you add the extra cap to the back of the 238 tuner, it is added to position 
3, 4, and 5 ---  not just 5. I found this out while doing a repair. The 
schematic seems to indicate this, but the verbiage in the manual implies it is 
only added to position 5.

I don’t know if this true of later versions (e.g. 238A), but I confirmed it on 
two original 238’s.
This means if you decide to just leave the cap there under normal usage, you 
are missing a large chunk of capacitor range between the end of 1-2, and 3-5 
plus the cap.

b

Bill ACITO | W1PA

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