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Total 758 documents matching your query.

261. Re: [TenTec] Argonaut V, PSK31 and ALC (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 20 Jun 2010 20:41:19 -0500
Normally on PSK very low power is best and running into ALC using causes splatter that others see on their waterfall displays and they WILL COMPLAIN about you using excess bandwidth. Back off so you
/archives//html/TenTec/2010-06/msg00335.html (7,814 bytes)

262. Re: [TenTec] Corsair II (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 20 Jun 2010 20:44:01 -0500
Low power can come from low PS voltage or dirty power connections on the back of the radio. Jumpy PTO probably needs a rebuild kit. First one takes about 3 hours, parts kit from TenTec. 73, Jerry, K0
/archives//html/TenTec/2010-06/msg00336.html (7,510 bytes)

263. Re: [TenTec] Crimp pins (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Wed, 23 Jun 2010 17:13:56 -0500
Mouser. www.mouser.com. Remote VFO connectors are a different family than the power connectors. Take different pins too. 73, Jerry, K0CQ _______________________________________________ TenTec mailing
/archives//html/TenTec/2010-06/msg00362.html (8,178 bytes)

264. Re: [TenTec] Crimp pins (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Wed, 23 Jun 2010 17:55:21 -0500
Tentec is also a good source. I don't have my Corsair II manual handy with the part numbers, but they have been posted on this forum repeatedly. The Molex connector pins used on most yaecomwood rigs
/archives//html/TenTec/2010-06/msg00366.html (10,317 bytes)

265. Re: [TenTec] Crimp pins (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Wed, 23 Jun 2010 17:57:10 -0500
Or tentechwiki at: http://tentecwiki.org/doku.php?id=80572 _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tente
/archives//html/TenTec/2010-06/msg00367.html (11,636 bytes)

266. Re: [TenTec] No 40 meters on 540 (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 27 Jun 2010 12:10:12 -0500
It takes a crystal oscillator in the mixing scheme to get from a 9 MHz IF and a 5 MHz VFO to 40 meters. That's not working, could be the crystal mixer or oscillator bandswitch or the crystal. 73, Jer
/archives//html/TenTec/2010-06/msg00379.html (7,578 bytes)

267. Re: [TenTec] Omni V power limits (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Thu, 01 Jul 2010 08:39:13 -0500
Part of the reason for running low power with the digital modes is intermod distortion that causes increased bandwidth, and part is the available power dissipation of the radio. I have confidence the
/archives//html/TenTec/2010-07/msg00002.html (8,527 bytes)

268. Re: [TenTec] Omni V power limits (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Thu, 01 Jul 2010 22:50:47 -0500
Very good point. 73, Jerry, K0CQ _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec
/archives//html/TenTec/2010-07/msg00019.html (9,127 bytes)

269. Re: [TenTec] Omni V power limits (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Thu, 01 Jul 2010 23:58:08 -0500
Someone asked why PSK? The answer is that PSK gets good data for the weakest signal to noise ratio of any data modulation method. 73, Jerry, K0CQ _______________________________________________ TenTe
/archives//html/TenTec/2010-07/msg00022.html (9,208 bytes)

270. Re: [TenTec] delta II display problem - anyone? (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Fri, 02 Jul 2010 04:50:48 -0500
Board ground failures at the board mounting screws can give odd results. Since the displays usually are multiplexed, dried up power supply (on the display logic board) electrolytics can give odd symp
/archives//html/TenTec/2010-07/msg00024.html (9,563 bytes)

271. Re: [TenTec] 962 Power Supply Schematic/Manual (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sat, 03 Jul 2010 13:23:25 -0500
It might be similar to the 960 and there's a schematic for the 960 at: http://www.qsl.net/tentec/manuals/960.pdf The 961 might be closer, there's a manual for it at: http://www.mods.dk/downloadmanual
/archives//html/TenTec/2010-07/msg00044.html (8,042 bytes)

272. Re: [TenTec] 962 Power Supply Schematic/Manual (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 04 Jul 2010 00:05:55 -0500
Trouble is Tentec doesn't admit there is a manual for that supply on line. They do admit the power supply exists in other manuals like that for the Paragon II and Omni VI. The other typical on line s
/archives//html/TenTec/2010-07/msg00049.html (8,459 bytes)

273. Re: [TenTec] Slightly OT - oscilloscope question (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sat, 10 Jul 2010 12:51:44 -0500
While Tek made similar sized scopes with 50 MHz bandwidth, the Tek 465 and 465A were a leap forward in performance and made in huge quantities. The delayed sweep switch can break though and Tek won't
/archives//html/TenTec/2010-07/msg00088.html (9,679 bytes)

274. Re: [TenTec] more oscilloscope questions (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 11 Jul 2010 09:30:44 -0500
If its not Tek or HP and if its HP before the 1740, its not really a scope that works well and reliably. Yes there were pretenders but their products tended to be poor with poor bandwidths and lousy
/archives//html/TenTec/2010-07/msg00095.html (9,832 bytes)

275. Re: [TenTec] more oscilloscope questions (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 11 Jul 2010 17:20:11 -0500
The manuals (service and user) for the HP1745 are on line at: http://www.home.agilent.com/agilent/techSupport.jspx?pid=1745A%3Aepsg%3Apro&pageMode=MN&cc=US&lc=eng&pselect=SR.PM-Find%20by%20Product%20
/archives//html/TenTec/2010-07/msg00108.html (12,600 bytes)

276. Re: [TenTec] more oscilloscope questions (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 11 Jul 2010 17:23:53 -0500
One thing the 465 did really well was to show single events. I remember using one to check a 100 nano second pulse that I triggered by hand. In full room light, the 465 had plenty intensity to show t
/archives//html/TenTec/2010-07/msg00109.html (11,594 bytes)

277. Re: [TenTec] more oscilloscope questions (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 11 Jul 2010 17:26:17 -0500
Remember as some sellers remember that the 465 was probably $1400 to 1600 new. My 475 was $2100 (plus tax). Its worth knowing how to use one and going to see it and use it. 73, Jerry, K0CQ __________
/archives//html/TenTec/2010-07/msg00110.html (10,530 bytes)

278. Re: [TenTec] more oscilloscope questions (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Tue, 13 Jul 2010 07:45:14 -0500
I'm sure we could debate Corsair vs Corsair II, or Paragon vs Paragon II, or Omni V vs Omni VI, or Tentec vs Inrad filters, and the affect of the particular radio on their performance vs building you
/archives//html/TenTec/2010-07/msg00133.html (9,354 bytes)

279. Re: [TenTec] one last scope question (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Tue, 13 Jul 2010 20:12:13 -0500
1715A manual dates from 1980 four years after the watershed 1740. It should be good. The manual is on agilent.com I've not used one, guessing it was meant to compete with my Tek 475 with 200 MHz band
/archives//html/TenTec/2010-07/msg00145.html (8,179 bytes)

280. Re: [TenTec] more oscilloscope questions (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Wed, 14 Jul 2010 13:31:23 -0500
I put down as many as I remembered that were less than 30 years old. Point is well made that this list is for discussion of all Tentecs, their care, and use and so that makes test equipment and anten
/archives//html/TenTec/2010-07/msg00155.html (11,121 bytes)

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