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References: [ +from:bill@wjschmidt.com: 86 ]

Total 86 documents matching your query.

1. Re: [Amps] Henry solid state (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Thu, 21 Aug 2003 18:17:41 -0500
Email Ted: Ted Shannon Henry Radio, Inc. 2050 South Bundy Drive #285 Los Angeles, CA 90025 310-820-1234 ext 310 Fax: 310-826-7790 henryradio@earthlink.net www.henryradio.com OUT Sincerely, Dr. Willia
/archives//html/Amps/2003-08/msg00005.html (9,341 bytes)

2. Re: [Amps] Roller Inductor Lubrication (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Sat, 6 Sep 2003 10:54:27 -0500
Most replies have offered solutions to your problem that involve greases. My suggestion is that you polish the mating surfaces with a cloth wheel to nice slippery shine... and therefore make the cond
/archives//html/Amps/2003-09/msg00063.html (8,021 bytes)

3. Re: [Amps] Transistor Bias (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Sat, 18 Oct 2003 12:06:20 -0500
You can find them here: http://www.communication-concepts.com/application_notes.htm ... check the EB104, which I recall has 4 power devices... Sincerely, Dr. William J. Schmidt, II K9HZ "Collector of
/archives//html/Amps/2003-10/msg00167.html (9,893 bytes)

4. Re: [Amps] Water cooling heat exchanger approaches (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Tue, 28 Oct 2003 22:15:24 -0600
You might consider heat-pipes.... Far more efficient and self contained. Very commonly used to cool very large SCRs for motor control circuits. Sincerely, Dr. William J. Schmidt, II K9HZ "Collector o
/archives//html/Amps/2003-10/msg00273.html (9,204 bytes)

5. Re: [Amps] Really Big Solid State Power Amplifiers (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Wed, 17 Dec 2003 08:44:31 -0600
There is a very "cheap" solutions for the problem... not terribly elegant, but it works great in my Harris 3230... fuses and transorbs. The FB fuses solve the current spikes, and the transorbs (acros
/archives//html/Amps/2003-12/msg00280.html (11,919 bytes)

6. RE: [Amps] 3.5 kV 2A REGULATED Power Supply: Schematic ? (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Sun, 28 Dec 2003 19:00:31 -0600
Requirements for the amp should be stated like this: what degree of linearity should I set for this amp, and given that... How do I design the power supplies and tank circuit to meet the specs I set.
/archives//html/Amps/2003-12/msg00437.html (11,852 bytes)

7. RE: [Amps] 3.5 kV 2A REGULATED Power Supply: Schematic ? (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Sun, 28 Dec 2003 20:39:21 -0600
So you mean I can just replace my bias supply with a charged capacitor.. .since you think the tube puts no current load on the bias supply? Sincerely, Dr. William J. Schmidt, II K9HZ Trustee of the N
/archives//html/Amps/2003-12/msg00441.html (9,366 bytes)

8. RE: [Amps] 3.5 kV 2A REGULATED Power Supply: Schematic ? (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Mon, 29 Dec 2003 00:42:19 -0600
Not much of an amp then is it? Sincerely, Dr. William J. Schmidt, II K9HZ Trustee of the North American QRO - Central Division Club - K9ZC "Collector of Edison Wind-up Phonographs... Do you have one
/archives//html/Amps/2003-12/msg00443.html (9,237 bytes)

9. RE: [Amps] 3.5 kV 2A REGULATED Power Supply: Schematic ? (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Mon, 29 Dec 2003 18:29:18 -0600
<<** Ian -- For AB2, yes, but for AB1, control grid V-stability matters not since there is no grid current. >> Look. It does not matter if the tube draws grid current or not. If there is any signal i
/archives//html/Amps/2003-12/msg00457.html (16,930 bytes)

10. [Amps] FW: FYI (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Wed, 31 Dec 2003 18:02:38 -0600
FYI... Sincerely, Dr. William J. Schmidt, II K9HZ Trustee of the North American QRO - Central Division Club - K9ZC "Collector of Edison Wind-up Phonographs... Do you have one for me?" Email: <mailto:
/archives//html/Amps/2003-12/msg00497.html (7,558 bytes)

11. Re: [Amps] 3.5 kV 2A REGULATED Power Supply: Schematic ? (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Thu, 1 Jan 2004 16:50:47 -0600
I'm posting this for K0DD... email him at rbonner@qro.com Class of operation is selected by BIAS. Class AB1 and AB2 is just a drive issue. You can either run the tube closer electrically to grid curr
/archives//html/Amps/2004-01/msg00007.html (13,349 bytes)

12. RE: [Amps] Retert: Best Coil Material for 160 Meters Mobile Ant. (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Sun, 28 Mar 2004 11:31:28 -0600
Try a bug-catcher 6160 (or at least use the pattern for your design). It seems to win all the challenges/ shoot-outs... I worked 27 countries in under an hour from my truck with it yesterday in the c
/archives//html/Amps/2004-03/msg00332.html (13,146 bytes)

13. [Amps] Mega Mobile (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Sun, 25 Apr 2004 00:25:41 -0500
You just gotta see this... takes mobile QRO to a whole new level: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3093349628&category=48710&ss PageNa
/archives//html/Amps/2004-04/msg00181.html (7,767 bytes)

14. Re: [Amps] 12 tube 3-500Z (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Tue, 25 May 2004 20:42:34 -0500
DAVE MADE DAVE MADE DAVE MADE Sincerely, Dr. William J. Schmidt, II K9HZ Trustee of the North American QRO - Central Division Club - K9ZC "Collector of Edison Wind-up Phonographs... Do you have one f
/archives//html/Amps/2004-05/msg00233.html (9,263 bytes)

15. [Amps] Conversion of SB-200 to 6 (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Mon, 22 Nov 2004 21:21:13 -0600
I've seen plenty of information on converting SB-220s to 6 meters... is there a similar wealth of information for SB-200s somewhere? Sincerely, Dr. William J. Schmidt, II K9HZ Trustee of the North Am
/archives//html/Amps/2004-11/msg00388.html (6,765 bytes)

16. Re: [Amps] Dx pedition amp ??? (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Thu, 2 Dec 2004 07:59:07 -0600
Yeah... you are on the right track. An SGC power cube-like amp with a good (no noise) switching power supply might be a good answer Sincerely, Dr. William J. Schmidt, II K9HZ Trustee of the North Ame
/archives//html/Amps/2004-12/msg00024.html (10,189 bytes)

17. [Amps] Wanted - 50pf vac variable (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Sun, 5 Dec 2004 16:22:04 -0600
I'm looking for a smaller foot-print (e.g. 4" in diameter or smaller, 6" length body or shorter) 50pf vacuum variable to replace the plate cap in a SB-220 for a conversion to six meters. I have a cou
/archives//html/Amps/2004-12/msg00088.html (7,147 bytes)

18. Re: [Amps] Unknown tube amp (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Sun, 12 Dec 2004 12:35:03 -0600
A picture would go a long way here.... Sincerely, Dr. William J. Schmidt, II K9HZ Trustee of the North American QRO - Central Division Club - K9ZC "Collector of Edison Wind-up Phonographs... Do you h
/archives//html/Amps/2004-12/msg00185.html (9,510 bytes)

19. Re: [Amps] Unknown tube amp (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Sun, 12 Dec 2004 14:22:18 -0600
Yeah now that I look at the pictures, it's either a 250TH or a 450TH... those are the only tubes that will fit. The 304TL doesn't work because it has a dual filament (4 pin connections). Sincerely, D
/archives//html/Amps/2004-12/msg00191.html (10,288 bytes)

20. Re: [Amps] antennas that are 1:1 vswr all over the band (score: 1)
Author: "Dr. William J. Schmidt, II" <bill@wjschmidt.com>
Date: Wed, 22 Dec 2004 20:02:16 -0600
STEPPIR www.steppir.com Sincerely, Dr. William J. Schmidt, II K9HZ Trustee of the North American QRO - Central Division Club - K9ZC "Collector of Edison Wind-up Phonographs... Do you have one for me?
/archives//html/Amps/2004-12/msg00275.html (9,177 bytes)

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