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41. Re: [TenTec] Better Bulb Life in TenTec 229, 238 Tuners (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Thu, 14 Feb 2008 21:05:41 -0800
Excellent thinking, Jerry. I hadn't thought of that. 73, Jim K9YC _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinf
/archives//html/TenTec/2008-02/msg00192.html (9,005 bytes)

42. Re: [TenTec] Better Bulb Life in TenTec 229, 238 Tuners (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Fri, 15 Feb 2008 12:33:28 -0800
Yes. That's what makes them difficult to use in applications like the Ten Tec tuners. The white tape that I've added on the vertical panels to reflect the light helps a lot. Your fears are not well f
/archives//html/TenTec/2008-02/msg00193.html (9,590 bytes)

43. Re: [TenTec] Titan 425 shelved for 10 years (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Mon, 18 Feb 2008 20:51:24 -0800
I agree with Bob that the most likely problem purely from sitting is the lytics in the power supply. I would turn it on as Bob suggested, letting the caps reform if they're going to. Chances are at l
/archives//html/TenTec/2008-02/msg00322.html (10,653 bytes)

44. Re: [TenTec] Titan 425 shelved for 10 years (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Tue, 19 Feb 2008 09:42:09 -0800
[Speaking of HV filter caps for the Titan 425] I found the best price at Allied. 73, Jim K9YC _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.co
/archives//html/TenTec/2008-02/msg00323.html (9,306 bytes)

45. Re: [TenTec] Titan 425 shelved for 10 years (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Wed, 20 Feb 2008 08:02:24 -0800
YES! This is an often overlooked specification of capacitors. Jim K9YC _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/li
/archives//html/TenTec/2008-02/msg00357.html (10,225 bytes)

46. Re: [TenTec] Power supplies (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Mon, 25 Feb 2008 10:06:47 -0800
TenTec radios run quite nicely from plain vanilla 13.8V power supplies. The only thing the TenTec supply adds to the equation is some overload protection, but reasonably careful operation of the radi
/archives//html/TenTec/2008-02/msg00437.html (8,039 bytes)

47. Re: [TenTec] Omni-V.9 (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Mon, 25 Feb 2008 10:01:15 -0800
FWIW, the Herc II works quite nicely with a generic 13.8V supply of sufficient heft. I use two Astron 70's, with their regulators linked. It will take very heavy duty service -- it's been through sev
/archives//html/TenTec/2008-02/msg00438.html (8,119 bytes)

48. [TenTec] Omni A 250 Hz Filter (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Tue, 26 Feb 2008 11:59:59 -0800
Hi Guys, In going through my goodie box, I came across a vintage TenTec crystal filter for that was removed from my old Omni A Series B. I bought both the filter and the radio new around 1980. I gave
/archives//html/TenTec/2008-02/msg00467.html (7,447 bytes)

49. Re: [TenTec] 238 Tuner Mod (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Tue, 04 Mar 2008 07:45:57 -0800
It's no surprise that the original caps, which have a fairly high negative temperature characteristic, change value as they warm up -- they are SPECIFIED to do that. :) I'm wondering if it was a pric
/archives//html/TenTec/2008-03/msg00081.html (8,500 bytes)

50. Re: [TenTec] Hercules II power plug (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Sat, 08 Mar 2008 17:17:26 -0800
Newark, Allied, Mouser, etc. 73, Jim K9YC _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec
/archives//html/TenTec/2008-03/msg00146.html (7,274 bytes)

51. Re: [TenTec] OmniV and PSK31 -- any experience to be shared?? (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Sun, 16 Mar 2008 22:37:33 -0800
A bit of an oversimplification. Two issues. #1 -- Power rating. PSK is a continuous mode, and most rigs must be "de-rated" by at least 3 dB (run at half their CW power) to avoid damage to the output
/archives//html/TenTec/2008-03/msg00221.html (10,006 bytes)

52. Re: [TenTec] OmniV and PSK31 (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Tue, 18 Mar 2008 20:23:00 -0800
FWIW, -25 dB is not that great. 25dB down from 100 watts is 0.25 watts, enough to QRM a weak signal. 73, Jim _______________________________________________ TenTec mailing list TenTec@contesting.com
/archives//html/TenTec/2008-03/msg00249.html (8,518 bytes)

53. Re: [TenTec] OmniV and PSK31 -- any experience to be shared?? (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Wed, 19 Mar 2008 08:39:02 -0800
That is exactly right. It is the basis of my recommendations that 1) the sound card run so that the output level is at least 3 dB below clip, which reduces the distortion produced by the sound card;
/archives//html/TenTec/2008-03/msg00250.html (10,008 bytes)

54. Re: [TenTec] Hercules II amp/p.s. (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Sun, 30 Mar 2008 10:14:22 -0700
The Herc II is a very operator friendly, good quality amp. It DOES require that the load connected to it be pretty close to 50 ohms -- in other words, it needs a tuner between it and most antennas. T
/archives//html/TenTec/2008-03/msg00374.html (8,342 bytes)

55. Re: [TenTec] LEGAL LIMIT PLUS AMP ALPHA 77D (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Mon, 07 Apr 2008 15:11:22 -0700
Contesters love amps and antenna tuners that auto-tune so that we can QSY and switch bands quickly, but they aren't cheap. For less than what I would pay for one decent used auto-tune legal limit amp
/archives//html/TenTec/2008-04/msg00066.html (8,462 bytes)

56. Re: [TenTec] LEGAL LIMIT PLUS AMP ALPHA 77D (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Mon, 07 Apr 2008 21:19:53 -0700
On Tue, 08 Apr 2008 00:48:03 +0000, someone who didn't sign his call wrote: Some of us do both. Many of us live in places where "putting money into an antenna" means selling our home and buying a new
/archives//html/TenTec/2008-04/msg00082.html (10,014 bytes)

57. Re: [TenTec] LEGAL LIMIT PLUS AMP ALPHA 77D (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Tue, 08 Apr 2008 08:44:40 -0700
It takes skill, power, antennas, and LOCATION. The rules of most contests combine with geography to favor DX stations in certain parts of the world and stations on the east coast of the US. Since mov
/archives//html/TenTec/2008-04/msg00084.html (11,589 bytes)

58. Re: [TenTec] LEGAL LIMIT PLUS AMP ALPHA 77D (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Tue, 08 Apr 2008 15:45:57 -0700
on all Yes. During the recent CQWPX SSB contest, I was in the 10M chair at NR6O (N6RO) during the day and 75M at night. Between about 11 am and 5pm, I made 125 Qs on 10M by continuously "calling CQ i
/archives//html/TenTec/2008-04/msg00086.html (10,812 bytes)

59. Re: [TenTec] ARGO V Mobile Power Source (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Thu, 10 Apr 2008 10:17:47 -0700
My tutorial on RFI and ferrites includes a section on using ferrite cores to kill noise in mobile applications. http://audiosystemsgroup.com/RFI-Ham.pdf The "executive summary" is that while ferrites
/archives//html/TenTec/2008-04/msg00128.html (9,601 bytes)

60. [TenTec] Twinlead and Balanced Tuners (score: 1)
Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
Date: Fri, 11 Apr 2008 15:37:07 -0700
I strongly urge anyone using or considering balanced feedline and and/or a balanced tuner to study the part of my RFI tutorial that talks about antennas and balance. Almost any ham antenna is likely
/archives//html/TenTec/2008-04/msg00129.html (10,365 bytes)

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