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41. Re: [Amps] Tank value problems and grid current (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Tue, 05 May 2009 07:20:44 -0700
ORIGINAL MESSAGE: REPLY: Peter is correct, but he should say "....specified screen current at full output". At less than full output, the screen current could be anything, either positive or negative
/archives//html/Amps/2009-05/msg00014.html (9,676 bytes)

42. Re: [Amps] Tank value problems and grid current (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Tue, 05 May 2009 07:25:22 -0700
ORIGINAL MESSAGE: REPLY: No, just the opposite. The tune cap is the one closest to the plate, the load cap is closest to the antenna. They both interact to some extent. The load cap affects the tunin
/archives//html/Amps/2009-05/msg00015.html (7,746 bytes)

43. Re: [Amps] tuned tank circuits (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Tue, 05 May 2009 11:25:52 -0700
ORIGINAL MESSAGE: REPLY: That is interesting but it calculates out to about 80 uH. Too much for ham purposes but would make a great shack decoration. 73, Bill W6WRT __________________________________
/archives//html/Amps/2009-05/msg00018.html (7,205 bytes)

44. Re: [Amps] Tank value problems and grid current (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Tue, 05 May 2009 11:28:35 -0700
ORIGINAL MESSAGE: REPLY: Remember, the calculated values are for a 50 ohm resistive load. With a real antenna, they can vary - especially the load capacitor. 73, Bill W6WRT __________________________
/archives//html/Amps/2009-05/msg00019.html (8,001 bytes)

45. Re: [Amps] russian door knob caps for R Ftank circuit (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Thu, 07 May 2009 07:36:52 -0700
ORIGINAL MESSAGE: REPLY: I have eight of them in my homebrew 8877 amp and they are all excellent so far. I have three 3300 pF in use for plate coupling (to the pi-net) and HV DC bypass, and five 470
/archives//html/Amps/2009-05/msg00030.html (7,863 bytes)

46. Re: [Amps] motor run cap (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Thu, 07 May 2009 20:17:11 -0700
ORIGINAL MESSAGE: REPLY: You could try that one. The capacitance is not critical but it will change the speed a little. Larger = faster. 73, Bill W6WRT _______________________________________________
/archives//html/Amps/2009-05/msg00039.html (7,482 bytes)

47. Re: [Amps] russian door knob caps for R Ftank circuit (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Thu, 07 May 2009 20:20:35 -0700
ORIGINAL MESSAGE: REPLY: Thanks for the information, Manfred. I should have suspected that. It's about time this country went Metric. A lot of things are already, but it needs to be 100%. 73, Bill W6
/archives//html/Amps/2009-05/msg00040.html (7,973 bytes)

48. Re: [Amps] OT: SG-230 Ground lug (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Fri, 08 May 2009 06:51:40 -0700
ORIGINAL MESSAGE: REPLY: In case you don't get an answer from an actual owner, I can take a guess. Screws and nuts for that purpose are almost invariably either 6-32, 8-32 or 10-32 thread. If it is l
/archives//html/Amps/2009-05/msg00042.html (7,252 bytes)

49. Re: [Amps] 50 MHz QSK relays for converted SB-220 (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Sun, 10 May 2009 14:20:05 -0700
ORIGINAL MESSAGE: REPLY: I have bought several from Max-Gain: http://www.mgs4u.com/RF-Microwave/vacuum-relays-SPDT.htm If you get the Jennings, pay close attention to the warning about the easily-dam
/archives//html/Amps/2009-05/msg00053.html (8,011 bytes)

50. Re: [Amps] COMMAND VHF 1200 (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Mon, 11 May 2009 08:22:45 -0700
ORIGINAL MESSAGE: REPLY: Have you tried Mouser, Allied or Newark? If you know the original manufacturer's part number, just type it in their search box. 73, Bill W6WRT _______________________________
/archives//html/Amps/2009-05/msg00060.html (6,865 bytes)

51. Re: [Amps] dumb query about fuses (maybe!) (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Tue, 12 May 2009 13:15:14 -0700
ORIGINAL MESSAGE: REPLY: Yes it does matter. A fuse with a too low voltage rating is likely to shatter when it blows and you'll be picking glass pieces out of the fuseholder. For 240 volt lines you w
/archives//html/Amps/2009-05/msg00062.html (7,904 bytes)

52. Re: [Amps] filament transformers (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Fri, 15 May 2009 13:54:58 -0700
ORIGINAL MESSAGE: REPLY: The three amp version would be my choice, especially if you can place it somewhere in the amp or power supply where it would get a small amount of air flow around it. I would
/archives//html/Amps/2009-05/msg00069.html (7,853 bytes)

53. Re: [Amps] filament transformers (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Sat, 16 May 2009 05:42:25 -0700
ORIGINAL MESSAGE: REPLY: That's really a lost art here in the States. I've been hamming since 1957 and have never known anyone (until now) who rolled his own. More power (sic) to you! 73, Bill W6WRT
/archives//html/Amps/2009-05/msg00081.html (8,827 bytes)

54. Re: [Amps] first time questions (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Sat, 16 May 2009 21:39:16 -0700
ORIGINAL MESSAGE: REPLY: The short answer is no, that is not enough voltage rating and here's why: When everything is tuned up correctly and not overdriven, the peak RF voltage will be almost exactly
/archives//html/Amps/2009-05/msg00098.html (8,663 bytes)

55. Re: [Amps] filament transformers (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Sat, 16 May 2009 21:47:49 -0700
ORIGINAL MESSAGE: REPLY: Excellent job, Jim. No wonder you're so loud here. :-) 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.conte
/archives//html/Amps/2009-05/msg00099.html (9,030 bytes)

56. Re: [Amps] DEAD Alpha 91B (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Mon, 18 May 2009 05:02:25 -0700
ORIGINAL MESSAGE: REPLY: Not trying to state the obvious, but you still have everything else running at 255 VAC. You could take a 15 volt transformer and wire the secondary in series with the 255 VAC
/archives//html/Amps/2009-05/msg00113.html (8,517 bytes)

57. Re: [Amps] DEAD Alpha 91B (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Tue, 19 May 2009 09:11:12 -0700
ORIGINAL MESSAGE: REPLY: Alpha did offer a supplemental fan as an option. Whether you have that or a homebrew job, someone at Alpha could probably tell you. 73, Bill W6WRT ___________________________
/archives//html/Amps/2009-05/msg00124.html (8,313 bytes)

58. Re: [Amps] HV switch-mode power supply (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Fri, 22 May 2009 20:03:23 -0700
ORIGINAL MESSAGE: REPLY: My 'lectric bill here in the California desert, miles from the nearest generating plant runs about 12 cents per kWh. For 2 cents, I ain't moving. Besides, in my nine years he
/archives//html/Amps/2009-05/msg00162.html (8,370 bytes)

59. Re: [Amps] HV switch-mode power supply (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Fri, 22 May 2009 21:05:25 -0700
ORIGINAL MESSAGE: REPLY: Northwest where they have all that hydroelectric stuff. Of course up there one hardly needs air conditioning in the summer anyway. Life ani't fair, is it? 73, Bill W6WRT ____
/archives//html/Amps/2009-05/msg00164.html (8,522 bytes)

60. Re: [Amps] HV switch-mode power supply (score: 1)
Author: "Bill, W6WRT" <dezrat1242@yahoo.com>
Date: Sat, 23 May 2009 10:09:57 -0700
ORIGINAL MESSAGE: <snip> REPLY: That is impressive, but IMO, it needs to be done by the utilities, not by each homeowner. Barring some technological breakthrough, they have an economy of scale that w
/archives//html/Amps/2009-05/msg00170.html (9,676 bytes)

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