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Total 77 documents matching your query.

41. Re: [Amps] Using autotuner in place of input network (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Wed, 11 Feb 2004 08:36:48 -0800
Many thanks to all who wrote. There were several good reasons why this is not a good idea. Back to the drawing board. Tnx again, -- 73, Bill W6WRT _______________________________________________ Amps
/archives//html/Amps/2004-02/msg00082.html (7,551 bytes)

42. Re: [Amps] another zener question (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Sun, 15 Feb 2004 05:43:59 -0800
_________________________________________________________ You would get a slight reduction in efficiency and a slight increase in linearity. Myself, I'd leave it at 300 ma or even less. Actually, any
/archives//html/Amps/2004-02/msg00114.html (7,735 bytes)

43. [Amps] ITT Jennings part numbers (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Wed, 25 Feb 2004 16:44:34 -0800
I have a vacuum variable which is marked 7-1000 pf, but has no voltage rating. The ITT Jennings part number is CVCJ-1000-0105. Can the voltage rating be deduced from the part number? Googled, but no
/archives//html/Amps/2004-02/msg00252.html (6,501 bytes)

44. [Amps] Grounded B+ amplifier (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Thu, 26 Feb 2004 09:33:47 -0800
Years ago I recall reading about an amplifier where the B+ supply was grounded and the cathode was "hot" with the B- supply. I'm wondering if that might have some advantages for high power amplifiers
/archives//html/Amps/2004-02/msg00264.html (8,164 bytes)

45. [Amps] Cabinet made from microwave oven? (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Mon, 01 Mar 2004 08:04:33 -0800
A couple of posts recently referred to using the screen and glass from a microwave oven. I'm wondering if anyone has used the whole cabinet for an amp project? I have one sitting out back that would
/archives//html/Amps/2004-03/msg00007.html (7,057 bytes)

46. Re: [Amps] Cabinet made from microwave oven? (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Tue, 02 Mar 2004 07:50:24 -0800
_________________________________________________________ Usable but underpowered for my current project. -- 73, Bill W6WRT QSLs via LoTW _______________________________________________ Amps mailing
/archives//html/Amps/2004-03/msg00018.html (7,413 bytes)

47. Re: [Amps] AL-1200 Intermittent HV Short (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Sat, 06 Mar 2004 21:38:47 -0800
_________________________________________________________ My instinct tells me it's the tube. There may be some loose pieces of crud floating around inside. Try removing the tube and cycling the amp
/archives//html/Amps/2004-03/msg00069.html (7,739 bytes)

48. Re: [Amps] AL-1200 Intermittent HV Short (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Mon, 08 Mar 2004 08:11:12 -0800
_________________________________________________________ The tube would cause the fuse to blow instantly. I don't know whether it was a hard short or gas; I sent the tube to Ameritron and after they
/archives//html/Amps/2004-03/msg00078.html (8,668 bytes)

49. Re: [Amps] AL-1200 Intermittent HV Short (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Mon, 08 Mar 2004 09:19:16 -0800
_________________________________________________________ Ok, if you say so. My only experience with a known gassy tube was a 3-500Z in a Heathkit SB-1000. I powered up the amp after it had been sitt
/archives//html/Amps/2004-03/msg00079.html (8,728 bytes)

50. Re: [Amps] Re: winding plate inductors (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Fri, 12 Mar 2004 09:07:24 -0800
_________________________________________________________ Try SOLNOID3. You can download it from http://www.btinternet.com/~g4fgq.regp/page3.html#S301 -- 73, Bill W6WRT QSLs via LoTW ________________
/archives//html/Amps/2004-03/msg00129.html (7,343 bytes)

51. Re: [Amps] Grounded B+ amplifier (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Fri, 12 Mar 2004 10:28:51 -0800
_________________________________________________________ Were you able to make a choke which had *no* resonances throughout the HF spectrum? That's the crux of the issue, and from what I hear, nobod
/archives//html/Amps/2004-03/msg00132.html (7,829 bytes)

52. Re: [Amps] Interesting news (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Sat, 13 Mar 2004 21:38:53 -0800
_________________________________________________________ Aside from the heater current and 6kv vs 4kv, how is it different from a 3CX1500A7? Perhaps a directly-heated cathode? According to the set o
/archives//html/Amps/2004-03/msg00142.html (7,826 bytes)

53. Re: [Amps] 160 meter tuned circuit (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Thu, 18 Mar 2004 07:05:29 -0800
_________________________________________________________ You can use a simple pi-network on the input. For a Q of 2 and assuming input and output impedances of 50 ohms, the values are 1768 pF for bo
/archives//html/Amps/2004-03/msg00194.html (8,470 bytes)

54. Re: [Amps] SELL: Stancor 5VCT@ 30a Filament Xmfr (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Thu, 18 Mar 2004 07:07:05 -0800
_________________________________________________________ Land you in jail? :-) -- Bill, W6WRT QSLs via LoTW _______________________________________________ Amps mailing list Amps@contesting.com http
/archives//html/Amps/2004-03/msg00195.html (7,198 bytes)

55. Re: [Amps] 3CX1500D7 VS 3CX1500A7 (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Sat, 20 Mar 2004 06:22:22 -0800
_________________________________________________________ Could you (or anyone) provide the wire size of the TL-922 tank coil, especially the ten meter section? May as well homebrew it right. -- 73,
/archives//html/Amps/2004-03/msg00218.html (7,482 bytes)

56. Re: [Amps] valuable parts from a microwave oven? (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Sun, 21 Mar 2004 05:04:28 -0800
_________________________________________________________ Possibly the screen in the door. Might be better looking than what you find at a hardware store. -- Bill, W6WRT QSLs via LoTW _______________
/archives//html/Amps/2004-03/msg00231.html (7,593 bytes)

57. Re: [Amps] insulation (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Fri, 26 Mar 2004 05:13:20 -0800
_________________________________________________________ One oddity of teflon to be aware of is a phenomenon called cold flow. When teflon is under pressure, such as a tightened-down nut and bolt, i
/archives//html/Amps/2004-03/msg00282.html (7,692 bytes)

58. Re: [Amps] insulation (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Fri, 26 Mar 2004 08:39:30 -0800
_________________________________________________________ QRO baby monitor? :-) -- Bill, W6WRT QSLs via LoTW _______________________________________________ Amps mailing list Amps@contesting.com http
/archives//html/Amps/2004-03/msg00288.html (7,827 bytes)

59. Re: [Amps] Solid State Relays (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Fri, 26 Mar 2004 18:37:18 -0800
_________________________________________________________ My Commander HF-2500 amp uses ZSAC devices for turn-on and it is smooth as silk. -- Bill, W6WRT QSLs via LoTW _______________________________
/archives//html/Amps/2004-03/msg00312.html (8,093 bytes)

60. Re: [Amps] Solid State Relays (score: 1)
Author: Bill Turner <wrt@dslextreme.com>
Date: Fri, 26 Mar 2004 19:09:15 -0800
_________________________________________________________ You'd lose that bet. The schematic shows nothing but the SSR's and fuses between the mains input and the HV transformer. The HV meter goes fr
/archives//html/Amps/2004-03/msg00314.html (8,545 bytes)

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