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Total 6 documents matching your query.

1. [TenTec] C-21 (score: 1): Author: "Ed Warhover" <warhover@htc.net>; Date: Tue, 9 Nov 2004 13:18:25 -0600; The Century 21, 670 Keyer, and 247 Tuner are sold. Tnx, Ed KF9XY _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo; /archives//html/TenTec/2004-11/msg00180.html (6,464 bytes)
2. [TenTec] C-21 (score: 1): Author: "George Allgood" <myp4k69@bellsouth.net>; Date: Fri, 21 Aug 2009 14:52:51 -0400; Recently, I found a Century 21 and let it "follow me home". Rebuilt the PTO and cleaned her up a bit and now, she's working like a charm. I'd like to change the frequency of the sidetone. The sideton; /archives//html/TenTec/2009-08/msg00167.html (7,214 bytes)
3. Re: [TenTec] C-21 (score: 1): Author: "N4PY2" <n4py2@earthlink.net>; Date: Fri, 21 Aug 2009 14:56:33 -0400; There was a pot on the bottom of the C21 you access through a hole in the bottom. This was for sidetone volume. I just can't remember if there were 2 pots with one also being for pitch. The original; /archives//html/TenTec/2009-08/msg00168.html (7,878 bytes)
4. Re: [TenTec] C-21 (score: 1): Author: Ed <w3nr@comcast.net>; Date: Fri, 21 Aug 2009 15:06:47 -0400; Not hard to do at all. I have done the change on a couple of these. Let me dig throuh my "manuels" and I'll post the the mod here. Ed W3NR _______________________________________________ TenTec maili; /archives//html/TenTec/2009-08/msg00169.html (7,165 bytes)
5. Re: [TenTec] C-21 (score: 1): Author: Ed <w3nr@comcast.net>; Date: Fri, 21 Aug 2009 16:29:56 -0400; R1 controls the sidetone frequency. It will be either a 68k or a 47k. I put a variable pot in temporarily to determine what I wanted. Measured the pot and used a fixed value. Ed W3NR ________________; /archives//html/TenTec/2009-08/msg00170.html (7,280 bytes)
6. Re: [TenTec] C-21 (score: 1): Author: "George Allgood" <myp4k69@bellsouth.net>; Date: Wed, 26 Aug 2009 11:04:01 -0400; Ed, Thanks for your help with the sidetone on Century 21. I put a small, 100K trimpot across R1 and now I can adjust the sidetone. Also pulled the speaker audio out through a closed-circuit quarter i; /archives//html/TenTec/2009-08/msg00202.html (9,042 bytes)

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