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References: [ +from:rohre@arlut.utexas.edu: 1984 ]

Total 1984 documents matching your query.

361. Re: [TenTec] Dipole Over Pool Enclosure (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Fri, 12 Oct 2012 17:24:11 -0500
I don't know if it is still there, but the Univ. TX Amateur Radio Club Web page had an RF Safety on line calculator. You certainly want to apply that to the antenna over a pool with aluminum nearby.
/archives//html/TenTec/2012-10/msg00095.html (8,718 bytes)

362. Re: [TenTec] Dipole Over Pool Enclosure (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Fri, 12 Oct 2012 17:54:38 -0500
The modeling over a metal pool structure would involve interpreting the effect of the fresh water pool on the antenna ground conditions, and also the ground effect of the metal structure. The analogy
/archives//html/TenTec/2012-10/msg00096.html (9,334 bytes)

363. Re: [TenTec] PS placement (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Tue, 04 Sep 2012 17:24:59 -0500
The issue is placing the power supply such that transformers in it do not couple hum to sensitive high gain receiver circuits in direct conversion radios, or to audio output stages in any receiver. L
/archives//html/TenTec/2012-09/msg00090.html (8,551 bytes)

364. Re: [TenTec] Station power supply?? (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Wed, 05 Sep 2012 16:30:27 -0500
Jim Brown has stated a very important point. I think the folks at Astron are not thinking of some problems that bonding the negative of the DC supply to chassis can introduce, and in fact were introd
/archives//html/TenTec/2012-09/msg00111.html (12,756 bytes)

365. Re: [TenTec] Station power supply?? (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Thu, 06 Sep 2012 15:12:12 -0500
While many radios may have negative of the supply tied to their chassis, if you also tied the negative at the supply to its chassis, you have then created a ground loop. That is what had happened at
/archives//html/TenTec/2012-09/msg00130.html (11,257 bytes)

366. Re: [TenTec] Station power supply?? (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Thu, 06 Sep 2012 15:59:06 -0500
Heavy Copper flashing or thicker copper plate is lower inductance to RF and lightning than wire. Copper Braid can be blown apart by lightning surges. A sheet of thick copper is now pretty much out of
/archives//html/TenTec/2012-09/msg00132.html (12,051 bytes)

367. Re: [TenTec] Omni 6+ Opt 3 problems (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Mon, 17 Sep 2012 16:47:25 -0500
Also, that replugging of cable connections for multipin cables is a good time to also spray the pins with DeOxit. Stuart Rohre K5KVH
/archives//html/TenTec/2012-09/msg00256.html (7,334 bytes)

368. Re: [TenTec] Omni 7 shuts down on overcurrent on 10-12 meters only (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Tue, 25 Sep 2012 17:51:26 -0500
If Ten Tec said to check diodes, that is something you can do if you have a diode test function on your DVM, or even if you only have a VOM with resistance scales. A good diode checks high resistance
/archives//html/TenTec/2012-09/msg00321.html (10,995 bytes)

369. Re: [TenTec] New TT Amp (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Mon, 13 Aug 2012 21:09:16 -0500
I would suppose that the 405 amps are hard to support with replacement parts now. The packaging was also dated. There have been many queries on QRP reflectors for sources for a 5 watt to 100 watt amp
/archives//html/TenTec/2012-08/msg00145.html (10,088 bytes)

370. Re: [TenTec] new amp (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Thu, 16 Aug 2012 14:35:24 -0500
Back in the late 50's, I remember pricing amplifiers and they were at 50 cents a watt. For awhile there, I was really keeping up with what amplifiers cost, as I thought that would be my natural progr
/archives//html/TenTec/2012-08/msg00176.html (9,328 bytes)

371. Re: [TenTec] new amp (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Thu, 16 Aug 2012 15:39:19 -0500
I will chime in on MFJ products. There was a write up in QST or CQ about MFJ and its MS manufacturing within the past couple of years I think. The majority of manufacturing for all their brands is do
/archives//html/TenTec/2012-08/msg00180.html (9,265 bytes)

372. Re: [TenTec] New amp (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Fri, 17 Aug 2012 14:35:40 -0500
Seems like you could add an open collector buffer to do the keying to the Flex. Yeah, bad design choice to not have that, it is pretty standard for control in anything. Stuart Rohre K5KVH
/archives//html/TenTec/2012-08/msg00219.html (8,700 bytes)

373. Re: [TenTec] Omni What? (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Fri, 17 Aug 2012 17:49:25 -0500
Have you visited the Ten Tec virtual Museum on the web? I am sorry, I have lost my link to it, but it should come up on a Google search of "Ten Tec Omni models" -Stuart K5KVH
/archives//html/TenTec/2012-08/msg00222.html (8,557 bytes)

374. Re: [TenTec] New amp Flex 1500 DOES have open collector (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Fri, 17 Aug 2012 19:24:53 -0500
OH, OK, that is good for the design, bad for the manual writer not making it clear. A lot of times info on external connectors is lacking. My Kenwood did not include as much info as would have been h
/archives//html/TenTec/2012-08/msg00230.html (9,204 bytes)

375. Re: [TenTec] Just an observation, Field Day in Hawaii (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Sun, 01 Jul 2012 17:34:55 -0500
A great assistance to new operators was an article in QST called "your Novice Accent" from back in the 60's. It was aimed at new CW users. It is on the web last I knew. Use Google and the title to fi
/archives//html/TenTec/2012-07/msg00021.html (9,358 bytes)

376. Re: [TenTec] 229A SWR Circuit (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Sun, 01 Jul 2012 17:49:57 -0500
Rick, The most likely failures of any SWR measuring circuit are 1) short of open of diodes 2) changes in carbon resistor values 3) Someone messing with, or a bad calibration pot 4) Finally, capacitor
/archives//html/TenTec/2012-07/msg00022.html (8,412 bytes)

377. Re: [TenTec] 229A SWR Circuit - UPDATE (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Sun, 01 Jul 2012 17:51:55 -0500
Since the meter is implicated, you might investigate if you can open up the meter case and check for bad solder joints, or dust, grit in the meter bearings. You might check with Ten Tec about a repla
/archives//html/TenTec/2012-07/msg00023.html (8,311 bytes)

378. Re: [TenTec] Just an observation, Field Day in Hawaii (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Mon, 02 Jul 2012 15:05:18 -0500
Thanks to Ron, K3MIY, I stand corrected, "Your Novice Accent" first appeared in Nov. 1956 QST. It is often quoted in forums and club newsletters and was published to the web. That is some staying pow
/archives//html/TenTec/2012-07/msg00036.html (9,394 bytes)

379. Re: [TenTec] Rack Mounts (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Mon, 02 Jul 2012 15:34:24 -0500
Harry, when I don't have rack mounts for some things at work, I have made a shelf from a large, deep, rack panel and used that to support the instrument I was rack mounting. Sometimes, I take the fee
/archives//html/TenTec/2012-07/msg00037.html (7,021 bytes)

380. Re: [TenTec] What's wrong with the Ten Tec Scout? (score: 1)
Author: Stuart Rohre <rohre@arlut.utexas.edu>
Date: Mon, 09 Jul 2012 13:35:13 -0500
Mike, I am a long time Scout owner. Nothing is wrong with the Scout if you accept its design parameters for a simple, no frills but a great filter radio. Mine has been out to hot Texas Field Days, in
/archives//html/TenTec/2012-07/msg00238.html (12,129 bytes)

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