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381. [TenTec] Corsair I vs. Corsair II IF's.... (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Wed, 30 Sep 1998 13:39:02 -0500; Like the Omni V and VI and likely many other tentec radios, the first IF is 9.000 mhz and the second is 6.3 mhz. 73, Jerry, K0CQ -- FAQ on WWW: http://www.contesting.com/tentecfaq.htm Submissions: te; /archives//html/TenTec/1998-09/msg00475.html (7,121 bytes)
382. [TenTec] TT 6mt conv (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Mon, 03 Aug 1998 08:48:31 -0500; There's rarely any SSB activity above .250. More rarely some AM on 50.4 and occasionally some CW around .100. Beacons around .050-.070. Most of the time what I hear is a huge pile on .125 with few ac; /archives//html/TenTec/1998-08/msg00018.html (7,040 bytes)
383. [TenTec] QRP T-Kits and IC sockets (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Mon, 03 Aug 1998 12:10:27 -0500; In some Tentec boards (1209 for certain) there's no plated through holes so component leads often serve to connect top and bottom ground planes. This is tougher to do with sockets. Most of the common; /archives//html/TenTec/1998-08/msg00022.html (8,829 bytes)
384. [TenTec] Scot + 6mt mod (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Mon, 03 Aug 1998 12:45:29 -0500; Bring out the power output control and make it switched with two controls or two sets of resistors and when switching in the transverter, switch the drive controls. 73, Jerry, K0CQ -- FAQ on WWW: htt; /archives//html/TenTec/1998-08/msg00024.html (7,011 bytes)
385. [TenTec] portable power for Scout (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Wed, 05 Aug 1998 13:46:10 -0500; 12 is marginal. 13.8 would be better. What's the voltage key down? I suspect more like ten even with the battery full charged. 73, Jerry, K0CQ -- FAQ on WWW: http://www.contesting.com/tentecfaq.htm S; /archives//html/TenTec/1998-08/msg00042.html (7,324 bytes)
386. [TenTec] Re: Omni-A ALC Problems (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Sun, 16 Aug 1998 17:52:31 -0500; Actually instead of selenium (never noted for making good RF diodes) you probably want germanium or fast silicon. Though unabused silicon ought to last a long time so I think for RF detectors they ar; /archives//html/TenTec/1998-08/msg00125.html (7,170 bytes)
387. [TenTec] coax keying leads (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Sun, 16 Aug 1998 19:54:12 -0500; Shielding of key leads is a good idea. I prefer a very flexible microphone cable so it doesn't break as often and so that the dielectric is somewhat lossy at RF. A piece of coax just a quarter wave l; /archives//html/TenTec/1998-08/msg00130.html (8,068 bytes)
388. [TenTec] old triton IV (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Sun, 16 Aug 1998 21:31:35 -0500; International Crystal Manufacturing in Oklahoma City is a super place to get crystals ground. They do have an 800 number for orders and take plastic. And their crystals work the first time. I don't s; /archives//html/TenTec/1998-08/msg00134.html (7,103 bytes)
389. [TenTec] Openwire feedlines (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Mon, 17 Aug 1998 22:03:45 -0500; While open wire line just won't work in this situation because pipe underground isn't going to stay dry or hold the open wire line a decent distance from the conductive (e.g. very lossy) earth there; /archives//html/TenTec/1998-08/msg00162.html (8,218 bytes)
390. [TenTec] TT Jones plugs clairified (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Mon, 13 Jul 1998 11:03:38 -0500; I don't think Cinch-Jones was taken over by Beau. Just that they make similar almost interchangeable products. Cinch-Jones connectors are listed as Cinch-Jones in the latest Digi-Key catalog. They do; /archives//html/TenTec/1998-07/msg00131.html (7,193 bytes)
391. [TenTec] Wall transformers (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Fri, 17 Jul 1998 10:01:02 -0500; Some wall warts are regulated, most are not. The CMOS loads of the keyer would let that 18 volt one ride at 18 volts and very likely fry to keyer. 73, Jerry, K0CQ -- FAQ on WWW: http://www.contesting; /archives//html/TenTec/1998-07/msg00172.html (6,962 bytes)
392. [Fwd: Re: [TenTec] DSP & COMPUTER NOISE] (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Mon, 20 Jul 1998 12:59:07 -0500; This is a multi-part message in MIME format. --18692EDC3A7F Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit But lead inductance and thus HF leakage is less with only one ca; /archives//html/TenTec/1998-07/msg00196.html (8,762 bytes)
393. [Fwd: Re: [TenTec] DSP & COMPUTER NOISE] (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Mon, 20 Jul 1998 22:04:41 -0500; There's a problem of capacitance to ground from line and neutral that it draws enough current to trip a GFI working with the old Johnson type line filters and if the radio isn't grounded it tickles t; /archives//html/TenTec/1998-07/msg00203.html (7,923 bytes)
394. [TenTec] QRP T-Kits and IC sockets (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Fri, 24 Jul 1998 21:44:54 -0500; Next time you have to change a chip that's soldered in make it easy on the PC board. Sacrifice the chip by cutting ALL its leads on top next to the plastic. Then you can remove the leads one at a tim; /archives//html/TenTec/1998-07/msg00286.html (7,479 bytes)
395. [TenTec] super log audio controls (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Thu, 30 Jul 1998 00:28:24 -0500; To convert a linear pot to logrithmic, add a fixed resistor between 1/4 and the value of the pot from wiper to common. For a purely linear pot the lower value will make it a reasonable approximation; /archives//html/TenTec/1998-07/msg00320.html (6,909 bytes)
396. [TenTec] Power Supply - Hercules (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Thu, 25 Jun 1998 09:08:34 -0500; That amp is tough service for Astrons or battery. I'm NOT a fan of Astron power supplies. They tend to use old (1970s) technology (723 regulator chip) that's not as effective as more modern regulator; /archives//html/TenTec/1998-06/msg00268.html (9,765 bytes)
397. [TenTec] Power Supply - Hercules (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Thu, 25 Jun 1998 16:52:54 -0500; And in that same 12 years I've know one ham to have rebuilt his Astrons twice and others to have done it more often from failures of pass transistors. Running 22+ volts unregulated and wasting all th; /archives//html/TenTec/1998-06/msg00273.html (8,128 bytes)
398. [TenTec] deep cycle batteries (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Fri, 26 Jun 1998 17:49:49 -0500; Lane, a boosting switcher would be easiest to use working with the battery voltage and raising it to 13.8. Anything linear won't boost, and will be only 52% efficient dropping from two batteries to 1; /archives//html/TenTec/1998-06/msg00291.html (7,684 bytes)
399. [TenTec] Scout/CW question (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Mon, 29 Jun 1998 10:07:41 -0500; I think its power supply ripple which goes up as the power supply is loaded heavier. The power supply needs to be larger or have a larger filter capacitor. 73, Jerry, K0CQ -- FAQ on WWW: http://www.c; /archives//html/TenTec/1998-06/msg00312.html (7,190 bytes)
400. [Fwd: Re: [TenTec] RE:Using CB amps with Qrp rigs.] (score: 1): Author: geraldj@ames.net (Dr. Gerald N. Johnson, P.E.); Date: Fri, 01 May 1998 11:19:42 -0500; Message-ID: <3549F5FA.6078@ames.net> To: <tentec@contesting.com> Date: Fri, 01 May 1998 11:19:06 -0500 From: "Dr. Gerald N. Johnson, P.E." <geraldj@ames.net> Reply-To: geraldj@ames.net Organization:; /archives//html/TenTec/1998-05/msg00006.html (7,827 bytes)

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