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Total 97 documents matching your query.

21. Re: [Amps] RF exposure limits in reality (score: 1)
Author: jsb@digistar.com
Date: Wed, 18 Aug 2004 14:51:42 -0400 (EDT)
That's a great link - will keep that one bookmarked. I agree - my grandfather ran a KW all through my mother's childhood operating CW and she turned out ok - hi - albeit 40 and 20 meters. The thing i
/archives//html/Amps/2004-08/msg00206.html (8,788 bytes)

22. Re: [Amps] GBR and radiation exposure (score: 1)
Author: jsb@digistar.com
Date: Fri, 20 Aug 2004 14:24:50 -0400 (EDT)
Were your ears burning? heh goofy chuckles, Jason N1SU _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2004-08/msg00241.html (8,292 bytes)

23. Re: [Amps] radiation exposure (score: 1)
Author: jsb@digistar.com
Date: Fri, 20 Aug 2004 14:36:50 -0400 (EDT)
mani tnx!! I believe the issue came to me front-and-center when I was discussing how 1KW output on the 160 meter band caused my GFI outlets to trip, and how 4KW would (theoretically) flicker the ligh
/archives//html/Amps/2004-08/msg00242.html (7,838 bytes)

24. Re: [Amps] SAFETY WITH HIGH VOLTAGE (score: 1)
Author: Jason Buchanan <jsb@digistar.com>
Date: Fri, 20 Aug 2004 20:08:29 -0400
Harold B. Mandel wrote: When working on the outboard plate supply to my linear amplifier my hand accidently brushed the Positive HV stud on the beehive feedthrough and I became slightly airborne for
/archives//html/Amps/2004-08/msg00247.html (7,857 bytes)

25. Re: [Amps] 4-250A and interesting socket information. (score: 1)
Author: jsb@digistar.com
Date: Wed, 25 Aug 2004 11:32:30 -0400 (EDT)
How were these tubes cared for in the days when they were in typical usage during wartime, etc.? Seems like a tube that got that hot wouldn't last long under battle conditions. 73 Jason N1SU ________
/archives//html/Amps/2004-08/msg00298.html (7,878 bytes)

26. [Amps] AM (score: 1)
Author: Jason Buchanan <jsb@digistar.com>
Date: Thu, 26 Aug 2004 21:40:19 -0400
Bill Fuqua wrote: Yes, the original Ultra Wide Band (UWB). I guess I should buy a microphone and see what all the hubbub is about. 73 Jason N1SU _______________________________________________ Amps m
/archives//html/Amps/2004-08/msg00370.html (9,998 bytes)

27. [Amps] Drake L4 conversion to use 3CX1200A7, discussed in CQ 10-1985 (score: 1)
Author: Jason Buchanan <jsb@digistar.com>
Date: Fri, 01 Oct 2004 20:05:45 -0400
Greetings, I was wondering what the thoughts and opinions are regarding the article in CQ magazine discussing the conversion of a 2-tube L4B to use the 3CX1200A7. [ continued, 5 minutes later, after
/archives//html/Amps/2004-08/msg00482.html (7,350 bytes)

28. Re: [Amps] Question about low frequency tank coil forms? (score: 1)
Author: jsb@digistar.com
Date: Fri, 3 Sep 2004 14:58:01 -0400 (EDT)
Akin to plumber's tape but made out of copper? 1/4" copper tubing with slices cut out of the sides of the tubing for the entire length of the coil? That's an interesting idea. But wouldn't that make
/archives//html/Amps/2004-09/msg00063.html (8,002 bytes)

29. Re: [Amps] Panasonic tube radio (score: 1)
Author: Jason Buchanan <jsb@digistar.com>
Date: Sat, 11 Sep 2004 22:20:22 -0400
Bill Turner wrote: Now that tubes have this cachet among audiophiles, regular humdrum tube circuits are costing 10 or 20 times more than they ought to. That's funny. Back in the olden days, audio pur
/archives//html/Amps/2004-09/msg00213.html (7,835 bytes)

30. Re: [AMPS] floating a filament transformer (score: 1)
Author: jsb@digistar.com
Date: Fri, 17 Sep 2004 11:26:43 -0400 (EDT)
I have been reading with interest about the filament chokes for 3-500Z, etc. In the photos I've seen of projects the filament choke appears to be bare wires around the ferrite rod. Am I seeing this c
/archives//html/Amps/2004-09/msg00289.html (7,900 bytes)

31. [Amps] Linearity metering (score: 1)
Author: Jason Buchanan <jsb@digistar.com>
Date: Thu, 07 Oct 2004 21:16:02 -0400
I noticed in the 1972/1973 ARRL handbooks that I have there is a 4-1000A amplifier project with a linearity metering circuit. Look for the SS-2000 project. This seems like an incredibly good idea, ho
/archives//html/Amps/2004-10/msg00080.html (7,302 bytes)

32. [Amps] Drake L4 tube replacement (score: 1)
Author: Jason Buchanan <jsb@digistar.com>
Date: Fri, 15 Oct 2004 22:20:44 -0400
hi, Is it possible to put new 3-500Z(G) tubes in the L4, not L-4B? Would like to put new tubes in L-4 but do not know what options there are. 73 Jason N1SU ___________________________________________
/archives//html/Amps/2004-10/msg00221.html (6,278 bytes)

33. Re: [Amps] Drake L4 tube replacement (score: 1)
Author: Jason Buchanan <jsb@digistar.com>
Date: Sat, 16 Oct 2004 13:53:21 -0400
Jan Erik Holm wrote: Yes! Just like when you run out of gas in your car, just put new in. Well, the consensus is that I need to find new chimneys to use the 3-500Z on account of the 3-400Z is a short
/archives//html/Amps/2004-10/msg00226.html (7,530 bytes)

34. Re: [Amps] 5 kw amps -- why? (score: 1)
Author: jsb@digistar.com
Date: Tue, 19 Oct 2004 14:38:58 -0400 (EDT)
Would be nice to have an amp that would provide legal limit output with minimal input and minimal distortion products. The FCC has given up on ham radio in the same fashion they gave up on CB radio.
/archives//html/Amps/2004-10/msg00267.html (8,674 bytes)

35. RE: [Amps] 5 kw amps -- why? (score: 1)
Author: jsb@digistar.com
Date: Tue, 19 Oct 2004 14:40:38 -0400 (EDT)
I can't comment on "money" but there's a lot to be said about an 8KW amplifier. 73 Jason N1SU _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contes
/archives//html/Amps/2004-10/msg00268.html (9,989 bytes)

36. [Amps] Drake L4/L4-B tube replacement - 3-400Z or 3-500Z or 3-500ZG (score: 1)
Author: Jason Buchanan <jsb@digistar.com>
Date: Wed, 20 Oct 2004 07:02:07 -0400
Not to beat a dead horse but is there any benefit to plugging 3-500ZG tubes in a stock Drake L4 or L4-B? Is the stock Drake power supply sudsy enough to show any benefit to using the bigger tubes or
/archives//html/Amps/2004-10/msg00285.html (7,380 bytes)

37. Re: [Amps] 5 kw amps -- why? (score: 1)
Author: jsb@digistar.com
Date: Wed, 20 Oct 2004 11:30:21 -0400 (EDT)
You still get more dissipation out of a 4-1000A than a 12AU7. I believe R. Jeremy had a whitepaper about self oscillation. 73 Jason N1SU _______________________________________________ Amps mailing l
/archives//html/Amps/2004-10/msg00301.html (9,448 bytes)

38. Re: [Amps] Blowing off steam (score: 1)
Author: jsb@digistar.com
Date: Wed, 20 Oct 2004 16:22:24 -0400 (EDT)
Easy way around that stuff - just enter how much you can afford before the auction ends. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.
/archives//html/Amps/2004-10/msg00319.html (7,595 bytes)

39. [Amps] Gettering 4CX800A GU74b (score: 1)
Author: Jason Buchanan <jsb@digistar.com>
Date: Thu, 21 Oct 2004 06:14:42 -0400
Harold B. Mandel wrote: After trying out an EMTRON DX-3 and finding it prone to self-oscillation without any neutralization circuitry and susceptible to RF Feedback at 18MHz, (enought to illuminate a
/archives//html/Amps/2004-10/msg00351.html (10,168 bytes)

40. Re: [Amps] Tentec TITAN III vs ALPHA99 (score: 1)
Author: Jason Buchanan <jsb@digistar.com>
Date: Mon, 25 Oct 2004 17:03:09 -0400
Hi all I am EA1DGZ my name is Carlos I am trying to make up my mind for a new amplifier and after searching and reading on the internet and talking to people, I am in between the Alpha99 and the Tent
/archives//html/Amps/2004-10/msg00415.html (8,277 bytes)


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