Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TenTec\]\s+Argosy\s+I\s+\"Thump\"\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TenTec\]\s+Argosy\s+I\s+\"Thump\"\s*$/: 12 ]

Total 12 documents matching your query.

1. [TenTec] Argosy I "Thump" (score: 1): Author: John R <W3ULS@3n.net>; Date: Wed, 16 Aug 2006 06:58:33 -0700; I'm a little late coming to this subject, but QST ran a fix in its "Hints and Kinks" for the AGC "pop" problem back in 1982 or l983. Someone may have more info on this. 73, John, W3ULS ______________; /archives//html/TenTec/2006-08/msg00485.html (6,524 bytes)
2. Re: [TenTec] Argosy I "Thump" (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Wed, 16 Aug 2006 10:19:03 -0500; The fundamental cause of thump in analogue Tentec radios is that the AGC is derived from audio sometimes after some audio filtration. In any case the audio wave rises more slowly than the IF wave and; /archives//html/TenTec/2006-08/msg00488.html (8,099 bytes)
3. Re: [TenTec] Argosy I "Thump" (score: 1): Author: Clark Savage Turner <csturner@kcbx.net>; Date: Wed, 16 Aug 2006 10:23:25 -0700; I think I have that mod in my old files somewhere ... I believe it is a change to the time constant / attack time of the audio AGC (by changing a cap and resistor as I recall). I did this and did NOT; /archives//html/TenTec/2006-08/msg00489.html (8,520 bytes)
4. Re: [TenTec] Argosy I "Thump" (score: 1): Author: Shawn Upton <kb1ckt@yahoo.com>; Date: Wed, 16 Aug 2006 18:57:46 -0700 (PDT); That's what I was starting to think, it was to do with the speed at which the audio derived AGC could respond. Lately, as I play on 80m, I've been wondering what I could do, perhaps disable AGC and c; /archives//html/TenTec/2006-08/msg00497.html (8,190 bytes)
5. Re: [TenTec] Argosy I "Thump" (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Wed, 16 Aug 2006 20:28:11 -0500; Backing off on the RF gain (not the IF gain) can minimize the excess signal power stored in the filter to make the thump. At least that works in my Corsair II. You need to keep enough gain to handle; /archives//html/TenTec/2006-08/msg00498.html (8,885 bytes)
6. Re: [TenTec] Argosy I "Thump" (score: 1): Author: "Ed - K9EW" <k9ew57@gmail.com>; Date: Thu, 17 Aug 2006 08:45:01 -0500; Unfortunately, there is no RF Gain control on the Argosy receivers. BUT... there is a classic article by Cornell Drentea, WB3JAO (now KW7CD), "Upgrading the Ten-Tec Argosy" from Ham Radio, Nov 1986; /archives//html/TenTec/2006-08/msg00506.html (8,196 bytes)
7. Re: [TenTec] Argosy I "Thump" (score: 1): Author: Jerry Volpe <kg6tt@arrl.net>; Date: Thu, 17 Aug 2006 07:23:32 -0700; Yes, the audio 'thump' is caused by the audio AGC being derived from the audio waveform rather than the IF itself. However there are numerous benefits to this scheme including the fact that the audio; /archives//html/TenTec/2006-08/msg00510.html (8,931 bytes)
8. Re: [TenTec] Argosy I "Thump" (score: 1): Author: Shawn Upton <kb1ckt@yahoo.com>; Date: Thu, 17 Aug 2006 16:14:41 -0700 (PDT); Interesting, hadn't thought of that. Too bad the Argosy lacks an RF gain. One step at a time. Shawn Upton, KB1CKT __________________________________________________ Do You Yahoo!? Tired of spam? Yah; /archives//html/TenTec/2006-08/msg00519.html (8,745 bytes)
9. Re: [TenTec] Argosy I "Thump" (score: 1): Author: Shawn Upton <kb1ckt@yahoo.com>; Date: Thu, 17 Aug 2006 16:32:02 -0700 (PDT); Sorry, didn't realize it had been answered a couple of times. I also have been basing my mods on the posted link; the recieve seemed pretty good, although it may need some more work: Was qso'ing the; /archives//html/TenTec/2006-08/msg00520.html (8,467 bytes)
10. Re: [TenTec] Argosy I "Thump" (score: 1): Author: "Mike Hyder -N4NT-" <Mike_N4NT@charter.net>; Date: Thu, 17 Aug 2006 20:52:30 -0400; I had a protracted exchange with a fellow whose Argosy was bothered by broadcast band transmissions. His trouble may have been from the standard AM broadcast band. He resolved the trouble by adding a; /archives//html/TenTec/2006-08/msg00521.html (9,184 bytes)
11. Re: [TenTec] Argosy I "Thump" (score: 1): Author: ynkedragon@aol.com; Date: Fri, 18 Aug 2006 13:39:01 -0400; I think the mods I have seen for the Argosy provide for the addition of a variable i.f. gain gain control. Wouldn't a switchable -10dB or -20db attenuator at or near the front end of the Argosy provi; /archives//html/TenTec/2006-08/msg00538.html (9,263 bytes)
12. Re: [TenTec] Argosy I "Thump" (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Fri, 18 Aug 2006 12:37:06 -0500; Sure an attenuator will work. It isn't as conveniently variable, but with the typical TenTec provisions for a separate receive antenna, and external antenna relay could allow the relay to be outside; /archives//html/TenTec/2006-08/msg00539.html (9,296 bytes)

Current List: 1 - 12
Page: [1]