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Total 1085 documents matching your query.

61. [Amps] Legal Limit Amps using 4CX250B tubes (score: 1)
Author: wlfuqu00@uky.edu (wl fuqua)
Date: Wed, 25 Sep 2002 09:30:41 -0400
What year did the FCC increase the legal limit from 1 KW average plate input power of all stages contributing power to the antenna to 1.5KW PEP output? Years ago if you were running a grounded grid a
/archives//html/Amps/2002-09/msg00240.html (8,832 bytes)

62. [Amps] Filter (score: 1)
Author: wlfuqu00@uky.edu (William Fuqua)
Date: Tue, 13 Aug 2002 16:39:12 -0400
You may get 120 Hz modulation of your signal if you don't use bifilar windings. The large 60Hz current may modulate the permeability of the ferrite (or even saturate it) and produce a modulated imped
/archives//html/Amps/2002-08/msg00127.html (8,741 bytes)

63. [Amps] 6A rectifier diode choice (score: 1)
Author: wlfuqu00@uky.edu (William Fuqua)
Date: Wed, 14 Aug 2002 10:04:58 -0400
That reminds me, our club has 36ea RCA 305 (7.6KV 5 amp stacks). I would like $20 each to put into our clubs treasury. Any takers? These are from a working 60KW TV transmitter. 73 Bill wa4lav
/archives//html/Amps/2002-08/msg00132.html (7,805 bytes)

64. [Amps] 4-250A question (score: 1)
Author: wlfuqu00@uky.edu (Bill L. Fuqua)
Date: Thu, 04 Jul 2002 13:43:28 -0400
This reminds me of a homebrew amplifier I got some years ago. I replaced the missing parts and installed a good 3-500z only to find the output was very low. I assume that why the builder gave up on i
/archives//html/Amps/2002-07/msg00062.html (8,319 bytes)

65. [Amps] My new Toy. Off Topic... (score: 1)
Author: wlfuqu00@uky.edu (Bill L. Fuqua)
Date: Sun, 07 Jul 2002 22:31:37 -0400
can it be equiped with photon topedos or phasers? Prototypes are working flawlessly :) http://www.sandlabs.com/etf.htm Please do not hit me to hard :) Alex ___________________________________________
/archives//html/Amps/2002-07/msg00112.html (7,907 bytes)

66. [Amps] My new Toy. Off Topic... (score: 1)
Author: Wlfuqu00@uky.edu (wlfuqu00@uky.edu)
Date: Mon, 08 Jul 2002 09:34:38 -0400
/archives//html/Amps/2002-07/msg00120.html (9,610 bytes)

67. [Amps] My new Toy. Off Topic... (score: 1)
Author: Wlfuqu00@uky.edu (wlfuqu00@uky.edu)
Date: Mon, 08 Jul 2002 09:51:00 -0400
I think I misspelled that Von instead of Van
/archives//html/Amps/2002-07/msg00122.html (10,315 bytes)

68. [Amps] TWT (score: 1)
Author: Wlfuqu00@uky.edu (wlfuqu00@uky.edu)
Date: Tue, 09 Jul 2002 10:34:21 -0400
The TWT is the amplifier. Just add power supply and maybe magnet supply if it does not have a permanent magnet. Bill
/archives//html/Amps/2002-07/msg00136.html (7,306 bytes)

69. [Amps] My new Toy. Off Topic & Zippers. Final. (score: 1)
Author: Wlfuqu00@uky.edu (wlfuqu00@uky.edu)
Date: Thu, 11 Jul 2002 09:16:51 -0400
So if I want to have add resistance in series with the power line to match the power supply to the line? This will improve the efficiency of my power supply? Hmmmmm You can't conjugate match most DC
/archives//html/Amps/2002-07/msg00150.html (11,558 bytes)

70. [Amps] FS: Ten-Tec Hercules 2 solid state amp++ (score: 1)
Author: Wlfuqu00@uky.edu (wlfuqu00@uky.edu)
Date: Tue, 16 Jul 2002 15:34:25 -0400
I disagree. I would only go to power transistors only if the collectors glow a nice orange/red at full rated dissipation . 73 Bill wa4lav
/archives//html/Amps/2002-07/msg00228.html (9,011 bytes)

71. [Amps] KW Linear for FT-817 (score: 1)
Author: Wlfuqu00@uky.edu (wlfuqu00@uky.edu)
Date: Wed, 17 Jul 2002 10:07:39 -0400
Another possibility is a 2 stage grounded grid amplifier. use a 4-125A gg to drive a pair of: 3-500Z 4-250 4-400 The driver and amplifier tubes could use the same HV power supply. The 4-125A would ha
/archives//html/Amps/2002-07/msg00243.html (9,376 bytes)

72. [Amps] Thermal Management in SS Amps. (score: 1)
Author: Wlfuqu00@uky.edu (wlfuqu00@uky.edu)
Date: Wed, 17 Jul 2002 11:52:48 -0400
Show me a machine shop that can machine copper to 100 Angstroms. 73 Bill
/archives//html/Amps/2002-07/msg00253.html (7,073 bytes)

73. Fwd: RE: [Amps] Thermal Management in SS Amps. (score: 1)
Author: Wlfuqu00@uky.edu (wlfuqu00@uky.edu)
Date: Wed, 17 Jul 2002 14:54:33 -0400
To: <amps@contesting.com>
/archives//html/Amps/2002-07/msg00263.html (8,684 bytes)

74. [Amps] Re: KW Linear for FT-817 (score: 1)
Author: wlfuqu00@uky.edu (Bill L. Fuqua)
Date: Wed, 17 Jul 2002 20:59:28 -0400
a passive input network could be used if the input resistance was 450 oh.ms and a 1:3 turns ratio(1:9 impedance ratio) transformer used. This would require less than 4 watts 73 Bill wa4lav --Original
/archives//html/Amps/2002-07/msg00278.html (8,061 bytes)

75. [Amps] Alex BS (score: 1)
Author: wlfuqu00@uky.edu (Bill L. Fuqua)
Date: Sun, 21 Jul 2002 00:20:48 -0400
Alex, Do you still insist that you have copper machined to 1/30 wavelength of visible light so that you can get good thermal transfer for your transistors and at a reasonable price as well? You seem
/archives//html/Amps/2002-07/msg00371.html (6,541 bytes)

76. [Amps] Muffin Fans and hot exhaust (score: 1)
Author: wlfuqu00@uky.edu (Bill L. Fuqua)
Date: Mon, 22 Jul 2002 22:27:51 -0400
There has to be some kind of start winding in any single phase motor. It may be a shorted turn in a shaded pole motor ( small motor) or an high value inductive winding for larger ones (which may stay
/archives//html/Amps/2002-07/msg00410.html (9,917 bytes)

77. [Amps] (no subject) (score: 1)
Author: Wlfuqu00@uky.edu (wlfuqu00@uky.edu)
Date: Tue, 23 Jul 2002 09:01:32 -0400
Apparently Alex has read something about STM. Scanning Tunneling Microscopy. There is a way that the probe ( which if made properly comes to a point of just a few atoms) can be used to up an atom or
/archives//html/Amps/2002-07/msg00425.html (8,667 bytes)

78. [Amps] The Great Equalizer (score: 1)
Author: Wlfuqu00@uky.edu (wlfuqu00@uky.edu)
Date: Tue, 23 Jul 2002 10:51:43 -0400
What does this have to do with QRO???
/archives//html/Amps/2002-07/msg00433.html (8,614 bytes)

79. [Amps] RE: The Great Equalizer/2 (score: 1)
Author: Wlfuqu00@uky.edu (wlfuqu00@uky.edu)
Date: Tue, 23 Jul 2002 13:56:04 -0400
Not so. Regardless their mission the military is best at war, fighting and killing. That is what it is designed to do. It is not good at civilian functions. This is why they fail in so many police ov
/archives//html/Amps/2002-07/msg00443.html (7,975 bytes)

80. [Amps] BIG coax (score: 1)
Author: Wlfuqu00@uky.edu (wlfuqu00@uky.edu)
Date: Wed, 31 Jul 2002 17:00:41 -0400
Our Club is going to sell all the rigid coax ( 3-1/8" and 6 1/8") that was inside an UHF broadcast transmitter building. Most of it is short pieces and elbows. Also there are 3 patch panels (one weig
/archives//html/Amps/2002-07/msg00545.html (7,097 bytes)


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