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References: [ +from:charles_steinmetz@lavabit.com: 43 ]

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21. Re: [TenTec] CorsairII notch potentiometer (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Thu, 10 Feb 2011 09:17:08 -0500; Not impossible -- just very, very difficult. All you need to do is find a dual-gang reverse log pot of the correct value and form factor. Or, you could panel-mount a single-gang 10k linear pot and b; /archives//html/TenTec/2011-02/msg00199.html (9,648 bytes)
22. Re: [TenTec] CorsairII notch potentiometer (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Sat, 12 Feb 2011 15:44:50 -0500; Unless you have spent time in the most stratospheric reaches of high fidelity audio reproduction or studio equipment, or precision instrumentation, every log and reverse-log pot you have ever used is; /archives//html/TenTec/2011-02/msg00224.html (10,225 bytes)
23. Re: [TenTec] 255 Power supply (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Fri, 18 Feb 2011 00:45:05 -0500; Typically, this is caused by parts of the transformer moving with the magnetic forces generated. Sometimes the laminations are loose, which may or may not be cured by tightening the core bolts. Somet; /archives//html/TenTec/2011-02/msg00310.html (8,354 bytes)
24. Re: [TenTec] TT transmatch Noise Bridge Kit (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Fri, 22 Apr 2011 14:02:27 -0400; Antenna "tuners" (matchboxes) do not really tune (resonate) an antenna -- they just match its impedance to the Tx or Rx. This is generally not very important at the sub-milliwatt power levels encount; /archives//html/TenTec/2011-04/msg00290.html (8,172 bytes)
25. Re: [TenTec] Solving PTO drift (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Mon, 05 Sep 2011 13:45:44 -0400; Try DuPont Krytox 203. I doubt it'll ever have to be relubricated again. Best regards, Charles _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.c; /archives//html/TenTec/2011-09/msg00062.html (8,783 bytes)
26. Re: [TenTec] Solving PTO drift (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Mon, 05 Sep 2011 13:49:58 -0400; DuPont Krytox GPL-203, to give its full name. _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec; /archives//html/TenTec/2011-09/msg00063.html (8,752 bytes)
27. Re: [TenTec] Solving PTO drift (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Tue, 06 Sep 2011 04:46:44 -0400; I'm familiar with it -- my bike shop stocks both it and Krytox (but not the GPL-203 -- GPL-206 and -226, which are thicker, about the same as the Phil Wood grease). The Wood & Co. is great grease, bu; /archives//html/TenTec/2011-09/msg00072.html (9,522 bytes)
28. Re: [TenTec] X-Lock-3 (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Thu, 26 Jan 2012 03:04:52 -0500; The added varactor circuitry will introduce additional phase noise, from both leakage current in the varactor and noise on the varactor bias (just from the new bias supply, if you use a varactor that; /archives//html/TenTec/2012-01/msg00184.html (7,220 bytes)
29. Re: [TenTec] OT: Scopes (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Sat, 18 Feb 2012 19:32:24 -0500; This topic comes up periodically -- you can find some posts in the archives. Here is what I wrote in July 2010, with some further comments in brackets: The Rigol digitizing scopes have also been very; /archives//html/TenTec/2012-02/msg00381.html (13,304 bytes)
30. Re: [TenTec] OT: Scopes (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Mon, 20 Feb 2012 06:03:27 -0500; As others have suggested, a seller who is willing to give you a money-back guarantee is one possibility. Expect to pay for this privelege. Otherwise, Be Prepared. If you are planning to look for a sc; /archives//html/TenTec/2012-02/msg00404.html (10,219 bytes)
31. Re: [TenTec] Soldering oxidized circuit cards (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Sun, 15 Jul 2012 21:59:56 -0400; The most painless way is dunk it in Tarn-X tarnish remover (available at many grocery stores): http://www.jelmar.com/TarnXbasic.htm Rinse very well and dry thoroughly. An eraser also works, as do oth; /archives//html/TenTec/2012-07/msg00351.html (10,835 bytes)
32. Re: [TenTec] OT: Looking for good starter HF transceiver (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Wed, 18 Jul 2012 01:56:51 -0400; For someone just getting into the hobby, I'd recommend a "jack-of-all-trades" transceiver until he knows more about how his interests will develop. To me, at the stated price point, this means a Kenw; /archives//html/TenTec/2012-07/msg00376.html (11,595 bytes)
33. Re: [TenTec] Boards with obsolete parts (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Sun, 22 Jul 2012 13:17:04 -0400; There is one more factor to consider. During the design phase, a manufacturer can usually choose from a number of hardware implementations of the conceptual design. At this stage, it can choose parts; /archives//html/TenTec/2012-07/msg00467.html (10,839 bytes)
34. Re: [TenTec] Wire Gauge Table (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Sun, 29 Jul 2012 17:02:25 -0400; I would hardly call a few multiple-choice questions drawn from a publicly-available question and answer pool "showing that we understand ... the technical fundamentals of radio and electronics." It's; /archives//html/TenTec/2012-07/msg00512.html (9,862 bytes)
35. Re: [TenTec] Adding Pilot Light to RX-320D (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Sat, 29 Sep 2012 08:22:47 -0400; I would like to add a pilot light to the front panel of my TenTec RX-320D. I have SOME home brewing skills... having built several kits, including a few TT receiver kits, and having designed some sma; /archives//html/TenTec/2012-09/msg00349.html (10,516 bytes)
36. [TenTec] Replacement speaker for RX340 (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Wed, 16 Jan 2013 19:58:49 -0500; I suspect that few of us use the internal speakers in our receivers very often -- I know I don't. However, I hate it when things do not work properly, even if I don't use them often. The voice coil i; /archives//html/TenTec/2013-01/msg00129.html (8,486 bytes)
37. Re: [TenTec] Built in SWR meter bannans (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Tue, 23 Apr 2013 20:22:59 -0400; I had so much trouble burning up baluns back in the 80s that I have switched to using only Teflon insulated wire for my chokes and baluns. Baluns don't normally burn up because the insulation isn't a; /archives//html/TenTec/2013-04/msg00265.html (10,314 bytes)
38. Re: [TenTec] Built in SWR meter bannans (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Tue, 23 Apr 2013 22:55:15 -0400; There is lots of information [about baluns] on the web. Jim replied: Yeah, and a lot of it is wrong. :) I take that as a given, so unexceptionable as not to require mention. I'd actually go further; /archives//html/TenTec/2013-04/msg00268.html (10,143 bytes)
39. Re: [TenTec] Built in SWR meter bannans (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Wed, 24 Apr 2013 02:17:42 -0400; It seems you would want to use wire whose insulation will not melt before the saturation temperature of the core. Well, that's fine, but the core should never be anywhere near its saturation temperat; /archives//html/TenTec/2013-04/msg00276.html (11,319 bytes)
40. Re: [TenTec] RF Speech Processor "TX IMD" (score: 1): Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>; Date: Mon, 17 Jun 2013 01:45:34 -0400; There are many of these regulations that are really open to interpretation by the reader. What exactly is good amateur practice? I know how I was taught and as a broadcast engineer again the term "go; /archives//html/TenTec/2013-06/msg00179.html (10,467 bytes)

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