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21. Re: [TenTec] RF Grounding (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Tue, 15 Jun 2004 21:17:31 -0500
Right. This is UTTER BS! Sounds like a pin 1 problem! Ten Tec gear is full of pin 1 problems. Yes, winding the keying line around a ferrite can be a band-aid for pin 1 problems. The catch is that tor
/archives//html/TenTec/2004-06/msg00464.html (10,761 bytes)

22. Re: [TenTec] Orion Finished? (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Wed, 16 Jun 2004 15:02:07 -0500
That is unsafe, and it is a violation of every electrical code I know of. Jim Brown K9YC _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contest
/archives//html/TenTec/2004-06/msg00476.html (8,454 bytes)

23. Re: [TenTec] On Grounding (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Wed, 16 Jun 2004 20:58:58 -0500
Strongly agree, and yours is very good too! Jim K9YC _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec
/archives//html/TenTec/2004-06/msg00489.html (7,291 bytes)

24. Re: [TenTec] Heil ProSet adapter with Orion -- hum? (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Wed, 23 Jun 2004 09:49:43 -0500
If you have RF feedback, it may be a pin 1 problem. Cable shields should go to the chassis, NOT to the circuit board. All the TenTec gear I have takes them to the circuit board and not the chassis, w
/archives//html/TenTec/2004-06/msg00711.html (8,270 bytes)

25. Re: [TenTec] Heil ProSet adapter with Orion -- hum (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Wed, 23 Jun 2004 22:19:47 -0500
Yep, the "ungrounded shield" that they are talking about is a classic pin 1 problem! Good to see that great minds are starting to run in the same direction! Jim Brown K9YC ___________________________
/archives//html/TenTec/2004-06/msg00739.html (8,507 bytes)

26. Re: [TenTec] Heil ProSet adapter with Orion -- hum (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Wed, 23 Jun 2004 22:21:00 -0500
That is a VERY good thing. Jim K9YC _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec
/archives//html/TenTec/2004-06/msg00740.html (8,345 bytes)

27. RE: [TenTec] Heil ProSet adapter with Orion -- hum (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 24 Jun 2004 08:17:20 -0500
I suspect that the problems here may be related to the difference between balanced and unbalanced audio wiring. Virtually all ham gear uses UN-balanced audio -- as I understand it (I'm not flush enou
/archives//html/TenTec/2004-06/msg00748.html (11,414 bytes)

28. Re: [TenTec] Heil ProSet adapter with Orion -- hum (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 24 Jun 2004 08:44:41 -0500
I'm only going on what I've heard and what I know about audio (and RF). I don't have the benefit of a schematic. :) Jim _______________________________________________ TenTec mailing list TenTec@cont
/archives//html/TenTec/2004-06/msg00752.html (8,927 bytes)

29. Re: [TenTec] Re Heil ProSet adapter with Orion -- hum (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 24 Jun 2004 11:53:14 -0500
I don't "claim" anything -- I thought I had heard that the Orion has a balanced input. Perhaps I heard wrong (or remembered wrong). I offered my professional advice (I work in pro audio with balanced
/archives//html/TenTec/2004-06/msg00757.html (8,173 bytes)

30. [TenTec] Re: Heil ProSet adapter with Orion -- hum (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 24 Jun 2004 16:35:13 -0500
Based on the correct info from those who have the schematic for the radio, it seems clear that the Orion has an UNbalanced input. In other words, I was mistaken about that. If you want to use a balan
/archives//html/TenTec/2004-06/msg00763.html (14,751 bytes)

31. RE: [TenTec] Why is the Jupiter better? (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 08 Jul 2004 10:24:31 -0500
I bought a used 746 from a local ham who had loaded it with filters. I'm VERY happy with the 746 on 6 meters, but don't use it on the low bands because I have other radios that are better. I tried to
/archives//html/TenTec/2004-07/msg00209.html (9,796 bytes)

32. Re: [TenTec] Testing a 301 Encoder (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Sun, 18 Jul 2004 22:52:46 -0500
Look at SurgeX (www.surgex.com). Their series mode surge suppression has become the favored method of many of us working in pro audio. Not cheap, but neither is the gear being protected! Jim Brown K9
/archives//html/TenTec/2004-07/msg00569.html (7,270 bytes)

33. Re: [TenTec] Argonaut/Titan III (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Mon, 19 Jul 2004 23:36:06 -0500
My K2 will drive my Titan to about 800 watts! It will also drive my original Herc I to about 250 watts. Jim K9YC _______________________________________________ TenTec mailing list TenTec@contesting.
/archives//html/TenTec/2004-07/msg00624.html (7,477 bytes)

34. RE: [TenTec] Argonaut/Titan III (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Wed, 21 Jul 2004 07:21:46 -0500
I am using the T-line to key my Hercules (original) from my Omni V, because it is specifcally designed to be keyed by the T-line of the original Omni-series rigs. It's a very simple mod to go inside
/archives//html/TenTec/2004-07/msg00641.html (9,290 bytes)

35. RE: [TenTec] Argonaut/Titan III (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Wed, 21 Jul 2004 07:52:59 -0500
The transceiver doesn't have to be designed to be keyed by an amp, it only has to be capable of being keyed by a straight key. The amp keys the transceiver's key jack (as if it were a straight key).
/archives//html/TenTec/2004-07/msg00643.html (8,175 bytes)

36. Re: [TenTec] Re: Heil ProSet on Orion - reprise (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Fri, 23 Jul 2004 10:35:45 -0500
Yes, it certainly is. But the reason may be a failure of some to understand and appreciate "the pin 1 problem" -- that is, the mis-termination of shields within equipment. Lots of ham gear, including
/archives//html/TenTec/2004-07/msg00715.html (9,961 bytes)

37. Re: [TenTec] Re: Heil ProSet on Orion - reprise (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Fri, 23 Jul 2004 11:32:48 -0500
Huh? My response is directed precisely at the technical problem at hand, and in precise technical terms. Until you understand the BASIC problem it's hard to come up with a rational solution. I'm sorr
/archives//html/TenTec/2004-07/msg00719.html (9,303 bytes)

38. Re: [TenTec] omni v short dits (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Sun, 25 Jul 2004 12:17:24 -0500
Memory is, indeed, flaky. Perhaps your experience on Field Day was with an Omni VI or VI Plus. The Omni V does not have an internal keyer, and has only a single keying input -- an RCA connector mount
/archives//html/TenTec/2004-07/msg00795.html (12,704 bytes)

39. Re: [TenTec] Basic question (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Sun, 01 Aug 2004 01:20:58 -0500
Here's a non-religous answer. I own an Omni V, an Omni A, an 850SAT, a 746 (internal audio DSP), and a K2/100 w/audio DSP. I also own a 599ZX. (I also own a Hercules 444 and a Titan 425, but you're t
/archives//html/TenTec/2004-08/msg00001.html (8,858 bytes)

40. RE: [TenTec] Basic question (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Sun, 01 Aug 2004 13:18:33 -0500
Yes, this is the sort of benefit that the audio DSP in the Omni VI Plus, K2, and 746 can provide, although the Orion may do more and/or better. The outboard 599ZX tries, but is nowhere near as good a
/archives//html/TenTec/2004-08/msg00005.html (7,901 bytes)

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