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261. Re: [TenTec] John Henry (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Mon, 22 Feb 2010 15:39:22 -0500
Great news & congrats to John! Paul, W9AC _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec
/archives//html/TenTec/2010-02/msg00292.html (7,967 bytes)

262. Re: [TenTec] OMNI VII vs. K3 ? Opinions invited. (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Sat, 24 Apr 2010 13:32:37 -0400
Jim, the K3 speaker itself is actually not too bad and has a decent-sized diaphragm and magnet driver. The problem is with the way the speaker mounts to the cabinet. A simple baffle would eliminate
/archives//html/TenTec/2010-04/msg00382.html (8,044 bytes)

263. Re: [TenTec] Bandswitching the 253 with OMNI VII or Orion (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Tue, 15 Jun 2010 14:21:31 -0400
Gary: An alternative is to use either quad array photo-Darlingtons packages for low-current interface applications... http://www.vishay.com/docs/83650/83650.pdf Or PhotoMOS, to directly drive relays
/archives//html/TenTec/2010-06/msg00217.html (11,731 bytes)

264. Re: [TenTec] The Eagle (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Sun, 26 Sep 2010 17:25:46 -0400
Probably the most significant way to sway TS-590 purchasers over to the Eagle is to include a 9 MHz I.F. port for use with LP-PAN, SDR-IQ, or QS1R as a panadapter and second Rx. For the minimal manuf
/archives//html/TenTec/2010-09/msg00283.html (11,346 bytes)

265. Re: [TenTec] The Eagle (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Sun, 26 Sep 2010 18:49:38 -0400
many operators want one, and how TT should be well aware of it. The inclusion of the port is a no-brainer. It takes no R&D (yes, really), nearly zero manufacturing effort, and essentially no added c
/archives//html/TenTec/2010-09/msg00289.html (11,714 bytes)

266. Re: [TenTec] The Eagle (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Sun, 26 Sep 2010 20:27:37 -0400
That's the single-most reason for the I.F. output. You don't pay for something you don't need as you would with an internal panadapter. The addition of the I.F. jack adds extremely little production
/archives//html/TenTec/2010-09/msg00298.html (11,347 bytes)

267. Re: [TenTec] The Eagle (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Sun, 26 Sep 2010 20:43:00 -0400
I don't see "SPLIT" nor "REV" buttons on the Eagle's front panel. It will be interesting to see how one engages simple "DX split" without the use of rig control software. Using "A/B" is one way but t
/archives//html/TenTec/2010-09/msg00303.html (10,433 bytes)

268. Re: [TenTec] The Eagle (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Sun, 26 Sep 2010 20:51:51 -0400
Excellent! That's a real competitive advantage over the TS-590. With the inclusion of the IF port, SDR-IQ (or LP-PAN), and N4PY control software, that's an extremely power operating combination, espe
/archives//html/TenTec/2010-09/msg00305.html (13,346 bytes)

269. Re: [TenTec] The Eagle (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Mon, 27 Sep 2010 21:07:00 -0400
MDS is -137 dBm/300Hz, preamp on. That's on-par with anything currently available. Paul, W9AC _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.c
/archives//html/TenTec/2010-09/msg00350.html (10,639 bytes)

270. Re: [TenTec] Ten-Tec Eagle (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Wed, 29 Sep 2010 18:33:11 -0400
It's there. Sort of. See the graph on p. 3 of the TS-590 brochure: http://www.kenwoodusa.com/UserFiles/File/UnitedStates/Communications/AMA/Brochures/TS-590.pdf Note that Kenwood claims 2 kHz DR (50
/archives//html/TenTec/2010-09/msg00454.html (8,992 bytes)

271. Re: [TenTec] Ten-Tec Eagle 599 (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Sat, 2 Oct 2010 15:52:43 -0400
That depends on how the RCA jacks are attached to the rear panel. If a PC sub-board is attached directly to the RCA jacks, it's not as simple as unsoldering a wire pair. Looking at the Eagle's rear
/archives//html/TenTec/2010-10/msg00048.html (8,361 bytes)

272. Re: [TenTec] installing ladder line (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Sun, 7 Nov 2010 17:41:35 -0500
Good advice Steve. A transmission line impedance "bump" is generally only an issue when the line must be terminated into its characteristic impedance. In that case, the impedance on the line as a fu
/archives//html/TenTec/2010-11/msg00082.html (9,749 bytes)

273. Re: [TenTec] Eagle Comparison (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Thu, 9 Dec 2010 12:38:33 -0500
Argonaut V. I suppose we can find some irony in this. Transceivers constructed pre-digital (displays, control, DSP, etc) likely have better longevity than those built afterwards. New chips are born
/archives//html/TenTec/2010-12/msg00241.html (9,858 bytes)

274. Re: [TenTec] OT: Is there a biography of Art Collins? was: EagleComparison (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Thu, 9 Dec 2010 20:27:41 -0500
Jim, Look for "Arthur Collins - Radio Wizard," by Ben W. Sterns. 2002. ISBN: 09716416-0-9. Abebooks.com may have a few copies. Paul, W9AC _______________________________________________ TenTec mailin
/archives//html/TenTec/2010-12/msg00250.html (10,177 bytes)

275. Re: [TenTec] New and Improved Terminology (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Sat, 8 Jan 2011 06:50:12 -0500
Steve, Do you know if the elevation chart would change much if instead of a ground-mounted 80m quarter-wave vertical, a half-wave vertical dipole was used ? The maximum current point would rise a qu
/archives//html/TenTec/2011-01/msg00191.html (13,264 bytes)

276. Re: [TenTec] Suggestions please (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Sun, 9 Jan 2011 16:31:25 -0500
And the reason I've been using homebrewed open 600-ohm line -- using the 276 log formula :-) The line uses E.F. Johnson glazed ceramic spreaders spaced every 18-inches. Total of roughly 50 ft. of li
/archives//html/TenTec/2011-01/msg00247.html (9,691 bytes)

277. Re: [TenTec] ant (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Fri, 14 Jan 2011 11:52:15 -0500
balance by grounding the center of the output coil, though that often works. The grounding of the antenna side of the coil (typically between two caps connected in series, with the the opposite end
/archives//html/TenTec/2011-01/msg00346.html (9,143 bytes)

278. Re: [TenTec] O3 wish list (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Thu, 12 May 2011 12:19:02 -0400
For the reason explained by Floyd, it seems to me that today, inclusion of a panadapter into a transceiver is not a very good use of a company's design resources. The inclusion of a simple 8-9 MHz b
/archives//html/TenTec/2011-05/msg00071.html (9,947 bytes)

279. Re: [TenTec] O3 wish list (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Fri, 13 May 2011 09:17:52 -0400
That's why I like the SDR-IQ approach for a panadapter as it handles the bulk of processing. CPU utilization with SpectraVue is very small in relation to PowerSDR/IF. So low, that I can use the Spec
/archives//html/TenTec/2011-05/msg00094.html (9,933 bytes)

280. Re: [TenTec] Omni VI+ Relay Clicking Correction (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Mon, 23 May 2011 07:53:25 -0400
Tom, As I recall, the only relays used in the Omni 6+ are on the low-pass filter board, and the reed relay used for T/R (transmit/receive). Since the chatter problem manifests with the 80m panel butt
/archives//html/TenTec/2011-05/msg00177.html (8,454 bytes)

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