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301. Re: [TenTec] Hercules 444 amp (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Sun, 10 Aug 2014 15:40:57 -0700
I'm using both used tubes and pulls pretty successfully. It's easy to run a Titan on a single tube at a fixed drive level that gives you 700W for the first tube you test, note the grid current, and c
/archives//html/TenTec/2014-08/msg00144.html (10,056 bytes)

302. Re: [TenTec] Hercules 444 amp (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Mon, 11 Aug 2014 00:01:07 -0700
K9YC's third law -- if it ain't broke, don't fix it. 73, Jim K9YC
/archives//html/TenTec/2014-08/msg00153.html (9,902 bytes)

303. Re: [TenTec] EV638 update for Orion (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Sat, 16 Aug 2014 10:57:12 -0700
There is no good reason to use a transformer with a pro dynamic mic with a ham rig. In an XLR, pin 1 is the shield, pin 2 is mic +, pin 3 is mic return. To connect it to a ham rig, connect pin 2 (mic
/archives//html/TenTec/2014-08/msg00248.html (12,193 bytes)

304. Re: [TenTec] 160 Meter Problem (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Mon, 18 Aug 2014 10:01:15 -0700
This is good advice. Other thoughts. The antenna described probably won't work very well on 160M -- very high SWR, difficult to tune, even with a very good tuner, and a dipole lower than about 150 ft
/archives//html/TenTec/2014-08/msg00277.html (10,957 bytes)

305. Re: [TenTec] 160 Meter Problem (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Mon, 18 Aug 2014 10:33:13 -0700
As N6BT has said, "everything works" -- the difference is how WELL it works. To prove his point, he worked all continents on a light bulb. :) I've worked at least 130 counties QRP with good antennas,
/archives//html/TenTec/2014-08/msg00279.html (10,993 bytes)

306. Re: [TenTec] 160 Meter Problem (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Mon, 18 Aug 2014 11:21:28 -0700
See the tutorial on 160M on my website. It's mostly about antennas and counterpoise systems. k9yc.com/publish.htm 73, Jim K9YC
/archives//html/TenTec/2014-08/msg00285.html (10,590 bytes)

307. Re: [TenTec] 160 Meter Problem (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Mon, 18 Aug 2014 11:28:33 -0700
Why trepidation? It's common for connector contacts to oxidize or become loose over the years. Disconnecting and reconnecting one or more times simply scrapes a bit of the oxidation off. Just be care
/archives//html/TenTec/2014-08/msg00286.html (11,508 bytes)

308. Re: [TenTec] 160 Meter Problem (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Mon, 18 Aug 2014 14:57:19 -0700
(Apologies to Jim (A) for deviating from his original thread into 160m antennas). I assume Jim (B) was referring to the information on this page: http://audiosystemsgroup.com/160MPacificon.pdf Right.
/archives//html/TenTec/2014-08/msg00295.html (13,478 bytes)

309. Re: [TenTec] 160 Meter Problem (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Tue, 19 Aug 2014 10:13:41 -0700
On Mon,8/18/2014 10:16 PM, Rick - DJ0IP / NJ0IP wrote: Jim, I didn't understand the point on slides 4 and 5. I concur with everything you wrote. Perhaps you mean where you wrote 130 ft. height for a
/archives//html/TenTec/2014-08/msg00299.html (13,723 bytes)

310. Re: [TenTec] 160 Meter Problem (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Tue, 19 Aug 2014 15:49:42 -0700
Because it's obvious that they are of little value. 73, Jim K9YC
/archives//html/TenTec/2014-08/msg00302.html (10,546 bytes)

311. Re: [TenTec] OT: Working DX on 160m with low dipoles (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Thu, 21 Aug 2014 17:12:12 -0700
Steve, Good point. I don't disagree that there are exceptions like this, but for most paths at most times, low angle paths predominate. If you study the tutorial I referenced, you'll see that a heigh
/archives//html/TenTec/2014-08/msg00327.html (8,716 bytes)

312. Re: [TenTec] MIKE & Eagle (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Sun, 24 Aug 2014 00:06:08 -0700
Off list, to avoid confusing the natives. Bob, I really question the need for anything more than a single resistor on the order of 5K from V+ to the high mic lead. The single resistor works fine with
/archives//html/TenTec/2014-08/msg00334.html (9,244 bytes)

313. Re: [TenTec] MIKE & Eagle (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Sun, 24 Aug 2014 14:16:24 -0700
For ham applications, I generally agree, although the windscreen can make a big difference in breath pops and spittiness. To me, the most difficult things to get right are comfort, build quality, iso
/archives//html/TenTec/2014-08/msg00338.html (9,077 bytes)

314. Re: [TenTec] Mike & Eagle (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Tue, 26 Aug 2014 20:12:13 -0700
On Tue,8/26/2014 6:33 PM, Bob McGraw - K4TAX wrote: While the radio may indicate an input impedance of 10 k ohms at 1 kHz, then one might ask what is the input impedance at 300 Hz. or some other freq
/archives//html/TenTec/2014-08/msg00351.html (10,815 bytes)

315. Re: [TenTec] Tentec Jupiter and Heil Mics (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Sat, 30 Aug 2014 22:53:05 -0700
I've never needed a preamp with a dynamic mic into a Ten Tec rig. Last one I owned was an Omni-V, and I used a low-Z pro dynamic mic with it going straight into the mic jack. I'd be surprised if that
/archives//html/TenTec/2014-08/msg00383.html (8,435 bytes)

316. Re: [TenTec] TT Mega Sale (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Fri, 04 Jul 2014 11:02:40 -0700
Radios and houses should not be viewed as investments or objects of worship, but to use and enjoy. I buy the best quality stuff I can afford, buy it used when I can, and play radio. Currently, all th
/archives//html/TenTec/2014-07/msg00046.html (10,026 bytes)

317. Re: [TenTec] TT Mega Sale (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Fri, 04 Jul 2014 15:08:26 -0700
Single Operator, Two Radio. One radio on one band in one ear, the second radio on another band in the other ear. While you're working someone (or calling CQ) on one radio, you're tuning the band for
/archives//html/TenTec/2014-07/msg00057.html (10,641 bytes)

318. Re: [TenTec] TT Mega Sale (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Fri, 04 Jul 2014 21:55:54 -0700
This has to be the post of the year! BTW -- I got my wife used, and she's definitely a keeper. Dunno about the bargain part though. :) 73, Jim K9YC On 7/4/2014 8:11 PM, Jim Allen wrote: I dunno. I ha
/archives//html/TenTec/2014-07/msg00072.html (9,695 bytes)

319. Re: [TenTec] On Noisy Transmitters (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Sun, 06 Jul 2014 13:33:38 -0700
YES! Wayne, N6KR, talked about phase noise and what he did to minimize it. In a different email (can't find it right now), he talked about what he did to minimize clicks. Clicks are generated by rise
/archives//html/TenTec/2014-07/msg00151.html (11,669 bytes)

320. Re: [TenTec] On Noisy Transmitters (score: 1)
Author: Jim Brown <k9yc@audiosystemsgroup.com>
Date: Sun, 06 Jul 2014 13:39:11 -0700
Phase noise is that "wooshing" sound you hear off frequency with CW keying from a strong signal that has a lot of it. Of course, phase noise is present in both receivers and transmitters, so if your
/archives//html/TenTec/2014-07/msg00152.html (10,651 bytes)

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