Search String: Display: Description: Sort:

Results:

References: [ +from:geraldj@weather.net: 758 ]

Total 758 documents matching your query.

361. Re: [TenTec] Triton IV power connectors (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Wed, 29 Sep 2010 10:04:22 -0500
But not the Molex needed for external VFO on a Corsair. RS has never carried the Amp connector. Yes you need to connect those but be aware that they carry line voltage, 120 volts AC. Don't try to swi
/archives//html/TenTec/2010-09/msg00410.html (9,477 bytes)

362. Re: [TenTec] The Eagle inflation costs, etc. (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Wed, 29 Sep 2010 12:46:15 -0500
There is no question that receivers have generally improved over the years. Though not necessarily in all details. Synthesizers and general coverage have made it tougher to get super intermod perform
/archives//html/TenTec/2010-09/msg00434.html (18,092 bytes)

363. Re: [TenTec] The Unique Eagle (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Wed, 29 Sep 2010 21:38:14 -0500
In my moving I have identified at least one case of 80 col cards, if its truly full, 5000, and a stack of boxes I've not checked but are probably used, e.g. punched cards. I'm sure for postage I coul
/archives//html/TenTec/2010-09/msg00480.html (8,865 bytes)

364. Re: [TenTec] Eagle Information (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Thu, 30 Sep 2010 12:51:28 -0500
There are other ways to protect stuff inside. One is to use a short bit, I keep a few screw machine bits that are only about 1-1/2" long on hand. Another more versatile technique is to surround the d
/archives//html/TenTec/2010-09/msg00498.html (9,923 bytes)

365. Re: [TenTec] Ten-Tec Eagle (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Thu, 30 Sep 2010 17:24:31 -0500
There are a lot more fundamentals in "Experimental Methods in RF Design Revised First Edition" by Wes Hayward, W7ZOI, Rick Campbell, KK7B, and Bob Larkin, W7PUA published by ARRL. I found a better pr
/archives//html/TenTec/2010-09/msg00510.html (11,686 bytes)

366. Re: [TenTec] Titan 425 Meter lamps? (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sat, 02 Oct 2010 17:36:47 -0500
I've checked the downloaded manual. The lamps appear to be in series and are run off the 28 volt control supply through a 20 ohm 1/2 watt resistor. The maximum current (dissipating 1/2 watt) through
/archives//html/TenTec/2010-10/msg00054.html (10,029 bytes)

367. Re: [TenTec] Titan 425 Meter lamps? (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sat, 02 Oct 2010 17:59:06 -0500
The lamps could be in parallel. The schematic is badly drawn. Two on line vendors of lamps http://www.donsbulbs.com/cgi-bin/r/b.pl/1820|28v|0.1a~usa.html and http://bulbster.com/lightbulbs/eiko-1820b
/archives//html/TenTec/2010-10/msg00056.html (11,287 bytes)

368. Re: [TenTec] Titan 425 Meter lamps? (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sat, 02 Oct 2010 20:23:55 -0500
Then check the 20 ohm 1/2 watt resistor R5 on the display board that supplies the lamps. Two 1820 should have cooked all the smoke out of that resistor if its truly 20 ohms 1/2 watt. That being a non
/archives//html/TenTec/2010-10/msg00063.html (8,715 bytes)

369. Re: [TenTec] Auto Tuners (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sun, 03 Oct 2010 19:59:51 -0500
Check their specifications. I think they insist on tuning at low power to preserve the lives of the tiny relays they use. That they can carry but not switch 100 watts. And then tuning with a couple w
/archives//html/TenTec/2010-10/msg00078.html (9,249 bytes)

370. Re: [TenTec] Titan 425 Meter lamps? (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Tue, 05 Oct 2010 14:01:51 -0500
So there must also be a difference in the series resistor shown as R5 on the display board. 20 ohms 1/2 watt should be toasted by two 1820 in parallel drawing 200 milliamps dissipating 0.8 watt. Thou
/archives//html/TenTec/2010-10/msg00092.html (10,694 bytes)

371. Re: [TenTec] Omni VI on the fritz (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Tue, 05 Oct 2010 17:44:11 -0500
And any board mounting screws that often are ground connections. The plastic material relaxes the contact pressure, the very definition of "plastic." 73, Jerry, K0CQ _________________________________
/archives//html/TenTec/2010-10/msg00098.html (9,357 bytes)

372. Re: [TenTec] Corsair II Amplifier Relay (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Tue, 05 Oct 2010 23:15:51 -0500
Why would you want a PIN diode? That relay doesn't handle RF, its to KEY the PA control circuit. You could replace it with a transistor, either bipolar or FET providing the PA keying circuit was at a
/archives//html/TenTec/2010-10/msg00110.html (7,812 bytes)

373. Re: [TenTec] Century 21 Analog Question... (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Thu, 07 Oct 2010 11:41:17 -0500
You might have to listen to the station on the hour and half hour to catch a station ID and maybe frequency. If they don't announce the frequency the FCC data base of call signs should give it. Then
/archives//html/TenTec/2010-10/msg00117.html (9,314 bytes)

374. Re: [TenTec] Century 21 Analog Question... (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Thu, 07 Oct 2010 12:55:33 -0500
Many ARRL handbooks in the past 20 or more years have included a high pass filter designed to reject all the AM broadcast band. I built one and it works well. 73, Jerry, K0CQ ________________________
/archives//html/TenTec/2010-10/msg00122.html (8,656 bytes)

375. Re: [TenTec] Century 21 Analog Question... (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Thu, 07 Oct 2010 12:57:40 -0500
Certainly a possibility. 73, Jerry, K0CQ _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec
/archives//html/TenTec/2010-10/msg00123.html (8,495 bytes)

376. Re: [TenTec] For Sale (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sat, 09 Oct 2010 09:24:52 -0500
Probably needs new electrolytics on the processor (readout) board. Possibly just needs connections cleaned. 73, Jerry, K0CQ _______________________________________________ TenTec mailing list TenTec@
/archives//html/TenTec/2010-10/msg00139.html (7,169 bytes)

377. Re: [TenTec] 28.5 band segment on Omni D (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Tue, 12 Oct 2010 09:49:50 -0500
FM is mostly above 29.5. There have been experiments with FM AFSK packet above 29. Way long ago, SSB began at 28.5 and up. DX and CW below that. 73, Jerry, K0CQ ______________________________________
/archives//html/TenTec/2010-10/msg00160.html (7,463 bytes)

378. Re: [TenTec] 28.5 band segment on Omni D (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Tue, 12 Oct 2010 12:44:47 -0500
Sounds like switches and connectors all over need quarter drops of DeoxIT applied. Not sprayed. And board grounding screws need to be tightened. 73, Jerry, K0CQ ______________________________________
/archives//html/TenTec/2010-10/msg00163.html (8,421 bytes)

379. Re: [TenTec] F/S Tne Tec Orion II Model 566 (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Tue, 12 Oct 2010 16:09:36 -0500
I've just the thing, a library table with sturdy oak legs, and an elm top, about 6' long by 30 or 36" deep. Weighs more than all the radios that can cover it put together. Even boat anchors and it wi
/archives//html/TenTec/2010-10/msg00169.html (7,870 bytes)

380. Re: [TenTec] Is The Eagle really soaring yet?. (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Tue, 12 Oct 2010 18:20:20 -0500
So true. If there is a signal its in receive mode or on that its in transmit mode, like RX+ or TX+ or PTT on the control connector that can run an external relay to put the receiver on a separate ant
/archives//html/TenTec/2010-10/msg00173.html (9,049 bytes)

Current List: 361 - 380
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20]
This search system is powered by Namazu