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201. Re: [TenTec] Orion2 Firmware Update (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sat, 17 Apr 2010 13:46:25 -0500
I figure at least a man year. I have many much simpler projects for other things in mind anyway. It might take a year to become competent enough in the embedded processors to get a rudimentary radio
/archives//html/TenTec/2010-04/msg00319.html (12,799 bytes)

202. Re: [TenTec] Prices (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Mon, 19 Apr 2010 16:01:17 -0500
73, Jerry, K0CQ _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec
/archives//html/TenTec/2010-04/msg00332.html (8,054 bytes)

203. Re: [TenTec] Prices (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Mon, 19 Apr 2010 23:06:02 -0500
Art's being a good CW op and an innovator didn't make him a good manager and it was poor top management that cost him the company. With 20,000 employees he was still trying to keep his fingers in eve
/archives//html/TenTec/2010-04/msg00337.html (8,444 bytes)

204. Re: [TenTec] Prices (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Tue, 20 Apr 2010 12:35:16 -0500
Some of the Tentec radio is built exactly like a PC with miniature aluminum electrolytics that have limited lifetimes already showing up in the Omni II. Gold plated edge connectors typical of PCs may
/archives//html/TenTec/2010-04/msg00341.html (9,100 bytes)

205. Re: [TenTec] Prices (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Tue, 20 Apr 2010 12:41:49 -0500
I don't have inside information like I had at Collins as an employee. The questions to be answered at Merrill Lynch, Lehman Bros, and Goldman Sachs is more about the honesty of management at all leve
/archives//html/TenTec/2010-04/msg00342.html (8,964 bytes)

206. Re: [TenTec] OMNI VII vs. K3 ? Opinions invited., (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 25 Apr 2010 11:35:33 -0500
No, a true wattmeter (Bruene design) takes the vector product of voltage AND current to produce DC proportional to power. 73, Jerry, K0CQ _______________________________________________ TenTec mailin
/archives//html/TenTec/2010-04/msg00430.html (14,891 bytes)

207. Re: [TenTec] OMNI VII vs. K3 ? Opinions invited., (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 25 Apr 2010 12:16:46 -0500
By traditional you mean the coupled wire like a monomatch? Commonly used for CB meters. It is directional because it combines capacitive and inductive coupling and produces a DC output proportional t
/archives//html/TenTec/2010-04/msg00434.html (18,727 bytes)

208. Re: [TenTec] OMNI VII vs. K3 ? Opinions invited., (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 25 Apr 2010 17:35:32 -0500
Because Tentec uses transistors rated for more power than they rate the radio, but they match the load to them for the rated power. Then those transistors come from the maker rated for operation into
/archives//html/TenTec/2010-04/msg00455.html (11,548 bytes)

209. Re: [TenTec] Orion II Firmware Status Update April 23 (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 25 Apr 2010 17:40:31 -0500
I think with the dsp doing detection and filtering that there should be two independent AGC loops. One in hardware to keep from overloading the A/D converter input, and a second at audio to keep the
/archives//html/TenTec/2010-04/msg00456.html (10,633 bytes)

210. Re: [TenTec] OMNI VII vs. K3 ? Opinions invited., (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 25 Apr 2010 17:47:19 -0500
Probably because there are differences in the RF and first IF circuits. Those in the Corsair II use multiple transformer coupled feed back (Ulrich Rohde's favorite circuit though patented by Anzac) a
/archives//html/TenTec/2010-04/msg00457.html (12,126 bytes)

211. Re: [TenTec] OMNI VII vs. K3 ? Opinions invited., (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 25 Apr 2010 19:24:35 -0500
I too, picked up the Corsair II for use with transverters. So far I haven't any transverters to fit. I was looking closely at Omni V or VI but didn't like their going to LSB for CW on 28 MHz which di
/archives//html/TenTec/2010-04/msg00462.html (16,415 bytes)

212. Re: [TenTec] OMNI VII vs. K3 ? Opinions invited., (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Mon, 26 Apr 2010 01:59:39 -0500
Every oscillator has phase noise. In the analog oscillator it comes from phase modulation of the sinewave by the 1/f and flicker noise of the active device and is usually better with a bipolar transi
/archives//html/TenTec/2010-04/msg00466.html (15,879 bytes)

213. Re: [TenTec] Ten-Tec Rig Comparisons (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Thu, 29 Apr 2010 15:16:27 -0500
Coupling capacitors only affed the low frequeny roll off. It takes shunt capacitors to roll off the highs. That and keep the output amp loaded at frequencies where the speaker goes highly inductive (
/archives//html/TenTec/2010-04/msg00537.html (12,155 bytes)

214. Re: [TenTec] Century/22 power out (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Thu, 29 Apr 2010 18:49:02 -0500
Perhaps it needs ALC detector diodes. They have been heard of failing to give this effect. 73, Jerry, K0CQ _______________________________________________ TenTec mailing list TenTec@contesting.com ht
/archives//html/TenTec/2010-04/msg00542.html (8,506 bytes)

215. Re: [TenTec] Ten-Tec Rig Comparisons (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Fri, 30 Apr 2010 21:03:30 -0500
The Sherwood list is the most comprehensive, making measurement details that ARRL has only adopted recently (compared to the age of a Triton or Corsair). Some of the early Tentecs used direct convers
/archives//html/TenTec/2010-04/msg00559.html (11,564 bytes)

216. Re: [TenTec] Ten-Tec Rig Comparisons (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sat, 01 May 2010 11:27:31 -0500
Having owned an Argonaut V and now an Omni VII, I know both of those use "bootloaders, firmware, and digital processing". Somehow I thought the Paragon was the first where software and digital proces
/archives//html/TenTec/2010-05/msg00003.html (11,919 bytes)

217. Re: [TenTec] Ten Tec rigs (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sat, 01 May 2010 16:05:15 -0500
The Corsair II uses BOTH 9 and 6.3 Mhz filters. Like all other Tentecs with an IF that IF is at 9 MHz and the product detector runs at 9 MHz, heterodyning to 6.3 MHz for those filters and back to 9 i
/archives//html/TenTec/2010-05/msg00010.html (7,417 bytes)

218. Re: [TenTec] Omni C question (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 09 May 2010 20:49:30 -0500
While not at all rare, I'd wish for some ALC rectifier diodes, probably Schottky diodes, just to be able to fix it on Saturday night without having to wait a week for some to arrive, costing 70 times
/archives//html/TenTec/2010-05/msg00068.html (10,480 bytes)

219. Re: [TenTec] WTT: "Wired For Ten-Tec" EV 727SR (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Tue, 11 May 2010 00:18:28 -0500
The connector is a standard CB part, often at Radio Shacks everywhere. Look for 274-001 or: http://www.radioshack.com/search/index.jsp?kwCatId=&kw=cb%20microphone%20connector&origkw=cb%20microphone%2
/archives//html/TenTec/2010-05/msg00085.html (14,409 bytes)

220. Re: [TenTec] Airpax (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Tue, 11 May 2010 00:53:36 -0500
There used to be specification on the Tentec web pages or the Corsair manual. I've moved mine and its not handy at the moment. Primarily its a 20 amp Airpax magnetic breaker with no time delay and ra
/archives//html/TenTec/2010-05/msg00086.html (9,583 bytes)

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