- 61. Re: [Amps] Power transformer for 600 watt rig (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Tue, 18 Mar 2008 09:11:46 -0700
- This is quite informative...Question, From Gary's comment about Secondary Resistance, and choke input power supplies, not sufficient for SSB dynamic regulation, if one has available an older power su
- /archives//html/Amps/2008-03/msg00165.html (10,484 bytes)
- 62. [Amps] Looking to use a high power amp on 1296 in SF CA area (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Sat, 22 Mar 2008 23:34:13 -0700
- Folks, There is a big event at Moffett Field, the NASA Ames base in South SF Bay area. Called Yuri's Night, in honor of Yuri Gagarin, it is a eclectic techno/space celebration with a lot of interesti
- /archives//html/Amps/2008-03/msg00216.html (8,492 bytes)
- 63. Re: [Amps] open frame relay rating (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Sat, 29 Mar 2008 10:06:09 -0700
- Hello Steve, There have been extensive past discussions on high power relays, in RF Amp service, on this reflector. I think consensus was that contact ratings of ordinary relays, were often for DC or
- /archives//html/Amps/2008-03/msg00340.html (9,037 bytes)
- 64. Re: [Amps] SB220 "A" mods (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Sat, 29 Mar 2008 10:51:15 -0700
- Jan and Group, I think you are all in agreement actually... Jim's operative word there, is "System" Speakers when used, are assumed to be connected to active electronics, which invariably include dio
- /archives//html/Amps/2008-03/msg00343.html (11,815 bytes)
- 65. Re: [Amps] Lots of Homebrew amps page (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Sat, 29 Mar 2008 14:43:03 -0700
- NOW I see why there seem to be so many LOUD JA Stations! So many tubes with lifting handles! All the best, Pat Barthelow (916) 315-9271 aa6eg@hotmail.com http://www.jamesburgdish.org ________________
- /archives//html/Amps/2008-03/msg00350.html (7,897 bytes)
- 66. Re: [Amps] Relays (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Wed, 2 Apr 2008 12:01:37 -0700
- I once used some solder wick lengths as a flexible RF conductor at various places in an HF amp, that needed a small amount of movement flexibility. Seemed to work OK, Incredibly fine, woven copper co
- /archives//html/Amps/2008-04/msg00044.html (10,461 bytes)
- 67. Re: [Amps] cooling chimney? (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Mon, 14 Jul 2008 13:37:54 -0700
- Regarding the cooling of the plate cap, Eimac in their Applications notes show how, even though the Coleman Pyrex cylinders have no curve, that the air, as it encounters the top of the tube, curves a
- /archives//html/Amps/2008-07/msg00130.html (11,566 bytes)
- 68. Re: [Amps] cooling chimney? (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Mon, 14 Jul 2008 13:36:43 -0700
- Regarding the cooling of the plate cap, Eimac in their Applications notes show how, even though the Coleman Pyrex cylinders have no curve, that the air, as it encounters the top of the tube, curves a
- /archives//html/Amps/2008-07/msg00134.html (12,229 bytes)
- 69. Re: [Amps] Wire (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Mon, 28 Jul 2008 12:17:59 -0700
- The Aviation World is quite in the spotlight on Wiring issues, and undergoing a lot of soul serching on solving tough problems, in aging aircraft wiring, and specialized insulations long accepted, bu
- /archives//html/Amps/2008-07/msg00342.html (14,980 bytes)
- 70. Re: [Amps] Dummy Load (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Sat, 2 Aug 2008 10:37:29 -0700
- Mike Does it look Anything like this: http://www.expeditionexchange.com/diamondantenna/diamond006%20064.jpg Bigger? Smaller, different? 73, All the best, Pat Barthelow AA6EG Jamesburg Moonbounce Team
- /archives//html/Amps/2008-08/msg00011.html (7,649 bytes)
- 71. Re: [Amps] SB-1000 (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Fri, 29 Aug 2008 09:09:36 -0700
- Joe, I would carefully fabricate an inductor of known dimensions, say, 1" diameter, say 10 turns, figure out the calculated inductance, measure it, if you can. Connect out of cirucuit to each doorkno
- /archives//html/Amps/2008-08/msg00157.html (8,239 bytes)
- 72. Re: [Amps] RF Interference (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Sat, 11 Oct 2008 09:41:43 -0700
- Hi Bob, How about salvaging an instrument grade brute force line filter from an old piece of gear, I dont know if they exist in Computer switching supplies, but I tore apart some really old instrumen
- /archives//html/Amps/2008-10/msg00053.html (10,357 bytes)
- 73. [Amps] QRO Heat management (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Sun, 9 Nov 2008 09:16:01 -0800
- Common to many discussions, about reliability and life of Ham amplifiers and power supplies, include an aspect where an effort is made to economize and "push" limits of components in hopes of money o
- /archives//html/Amps/2008-11/msg00072.html (8,934 bytes)
- 74. Re: [Amps] help with corona discharge (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Wed, 12 Nov 2008 09:39:37 -0800
- I first interpreted the comment on the blue glow observation, as meaning the glow is in the air out side the tube body, but now realize that what you are probably seeing is Cerenkov radiation generat
- /archives//html/Amps/2008-11/msg00131.html (10,779 bytes)
- 75. Re: [Amps] Inductor Software? (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Tue, 9 Dec 2008 13:34:38 -0800
- There is something quite satisfying about seeing/dealing/Working with the components of HI power RF... Working around them are kind of like experiencing a live Rolling Stones Concert. QRP which has i
- /archives//html/Amps/2008-12/msg00178.html (10,699 bytes)
- 76. [Amps] 4-1000A Featured [well... seen] on National Television (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Sat, 13 Dec 2008 09:06:24 -0800
- Interesting Network news clip last night, a news interview of Ron Gettlefinger, President, of the UAW re the Big 3 disaster news...in an otherwise barren office background, a prominent object in view
- /archives//html/Amps/2008-12/msg00212.html (7,849 bytes)
- 77. [Amps] Sourcing QRO components (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Sat, 13 Dec 2008 11:00:11 -0800
- I was wondering if many/any of the folks on this reflector have affiliations with professional broadcast....as in SBE or other organizations. It seems that some (many) components of ham QRO construct
- /archives//html/Amps/2008-12/msg00217.html (8,129 bytes)
- 78. Re: [Amps] HV wire (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Mon, 22 Dec 2008 14:46:36 -0800
- Re HV wire; Safety; When I built an amp with a separate power supply, heavy, roll around, I felt uncomfortable with just a polyethelyne or silcone rubber insulation over the B+. Often, at least in my
- /archives//html/Amps/2008-12/msg00293.html (12,396 bytes)
- 79. Re: [Amps] Anyone around the King George, VA area (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Fri, 26 Dec 2008 21:37:49 -0800
- Isn't that the one with the BIG glass bottle? /Room heater; 3-1000Z? All the Best, Pat Barthelow, AA6EG aa6eg@k6bj.org Skype: sparky599 Jamesburg Moon Bounce Team http://www.jamesburgdish.org "The mo
- /archives//html/Amps/2008-12/msg00344.html (9,889 bytes)
- 80. Re: [Amps] 5cx1500 Amp (score: 1)
- Author: Pat Barthelow <aa6eg@hotmail.com>
- Date: Sat, 3 Jan 2009 19:44:43 -0800
- Dont know the year, or issue, but I do remember a HAM RADIO Magazine article on a 5cx 1500 Amp. I remember that the issue had a line drawing of the outline of a 5cx 1500 on the cover... All the Best,
- /archives//html/Amps/2009-01/msg00025.html (11,533 bytes)
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