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Total 20 documents matching your query.

1. Re: [Amps] Inductor Software? (score: 1)
Author: "Jack Shirley" <jcshirle@gmail.com>
Date: Thu, 4 Dec 2008 18:58:51 -0500
go to www.rfcafe.com There are a lot of stuff there. 73 N8DX _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2008-12/msg00096.html (8,539 bytes)

2. [Amps] inductor calc. (score: 1)
Author: "Jack Shirley" <jcshirle@gmail.com>
Date: Thu, 4 Dec 2008 19:15:42 -0500
http://www.daycounter.com/Calculators/Air-Core-Inductor-Calculator.phtml _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/list
/archives//html/Amps/2008-12/msg00098.html (6,325 bytes)

3. Re: [Amps] SB-220 and Xfrmr Smoke...Part 4 (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Thu, 5 Feb 2009 13:02:32 -0500
I looked at your pictures and have the following comments: 1) It looks like you painted the transformers. Bad idea. Why? Chances are that the paint contains carbon. A lot of black paints do. I had a
/archives//html/Amps/2009-02/msg00118.html (11,422 bytes)

4. Re: [Amps] Transformer Update (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Sat, 28 Feb 2009 13:26:04 -0500
Another vendor for high power transformers is EPD , Electronic Products Design www.epd-inc.com Wendell NC. Contact name is Peter Egglmann. They had a booth at the Orland Hamfest and had several sampl
/archives//html/Amps/2009-02/msg00721.html (9,346 bytes)

5. [Amps] Dentron DTR-2000L PS (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Sat, 28 Feb 2009 13:33:43 -0500
Is there a source for the an updated PS board for the Dentron DTR-2000L? Its turning out to be a real kludge to replace the caps on the board with .4 OC snap in electrolytics. If not, the would anyon
/archives//html/Amps/2009-02/msg00723.html (6,858 bytes)

6. [Amps] AL-1200/1500 question (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Thu, 5 Mar 2009 14:13:32 -0500
Ameritron uses a step-start circuit in the AL1200 and 1500 which uses a relay to short out a 10 ohm series resistor in the transformer primary to limit current inrush. The relay in question is rated
/archives//html/Amps/2009-03/msg00154.html (7,308 bytes)

7. [Amps] AL-1200/1500 question (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Thu, 5 Mar 2009 14:27:53 -0500
How do you know if your step start relay is working? Mine was welded closed and right now I have the relay removed and circuit completed without it and I cant tell the difference. I'm not sure how lo
/archives//html/Amps/2009-03/msg00156.html (7,249 bytes)

8. [Amps] item that was for sale good luck shipping (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Sun, 15 Mar 2009 00:28:14 -0400
Pyranol is PCB ** <http://www.chemindustry.com/chemicals/14510.html>*polychlorinated <http://www.chemindustry.com/chemicals/14510.html>**Biphenyl<http://www.chemindustry.com/chemicals/14510.html> * M
/archives//html/Amps/2009-03/msg00417.html (7,264 bytes)

9. Re: [Amps] Clips for oil-filled capacitors (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Thu, 19 Mar 2009 20:56:03 -0400
Is this what your are looking for? http://www.mcmaster.com/#j-bolts/=12rf23 73 n8dx _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/m
/archives//html/Amps/2009-03/msg00494.html (8,936 bytes)

10. [Amps] Need help with Henry 3k Premier/3cx1200a7 (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Mon, 23 Mar 2009 13:03:51 -0400
I am second owner. This one covers 160-10M 6 yrs ago had problem on 12/10M, possible parasitic, blew 25 ohm res in B- and plate choke. Henry said there was a mod for this problem. Deck was sent back
/archives//html/Amps/2009-03/msg00504.html (7,849 bytes)

11. Re: [Amps] Drake L7 amp (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Tue, 7 Apr 2009 12:14:57 -0400
Hi I used to work at Drake when the L4 B was in Production. I wasn't there for the TR7, etc but if its the same paint that they used on the TR7, it was a special paint that was used for solar collect
/archives//html/Amps/2009-04/msg00079.html (10,227 bytes)

12. [Amps] DENTRON DTR-2000L, ETC (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Wed, 1 Jul 2009 12:03:56 -0400
Let me add: Only one side of AC mains is fused. Grid and Cathode are seperate, no filament choke. No step-start 8877s must have been cheap when this was designed. 73 n8dx ____________________________
/archives//html/Amps/2009-07/msg00014.html (6,864 bytes)

13. Re: [Amps] grounding grids (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Thu, 30 Jul 2009 19:25:08 -0400
I looked at the various 3-400 and 3-500 circuits in the Eimac Amateur Service Newsletters and did not find this mentioned anywhere. If the SB-220 and L4 use the same grid circuit, I could ask the eng
/archives//html/Amps/2009-07/msg00415.html (8,873 bytes)

14. [Amps] Eimac AS newsletters (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Thu, 30 Jul 2009 19:33:04 -0400
Does anyone have a copy of EIMAC AS-45? ( design and construction techniques for linear amplifiers using the 8877 ) I have all except this one N8DX _______________________________________________ Amp
/archives//html/Amps/2009-07/msg00416.html (6,363 bytes)

15. Re: [Amps] grounding grids (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Thu, 30 Jul 2009 22:59:36 -0400
The answer is: to provide -2db negative feedback. This was done to match the output power of the TR-3 and TR-4. Also of note; it was the first 3-400/500 amp to have tuned input circuits, The output c
/archives//html/Amps/2009-07/msg00422.html (11,410 bytes)

16. Re: [Amps] Subject: grounding grids (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Mon, 3 Aug 2009 02:16:46 -0400
Yes, the RF choke is for DC return only. Jack N8DX _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2009-08/msg00046.html (11,537 bytes)

17. Re: [Amps] DRAKE 6 Meter Amp (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Thu, 6 Aug 2009 15:33:10 -0400
Yes there was a 6M version of the L4 that never made it to production. There was at least 2 prototypes, I knew of at least one that was sold and the buyer said he was going to convert it back to an L
/archives//html/Amps/2009-08/msg00096.html (9,466 bytes)

18. Re: [Amps] DRAKE 6 Meter Amp (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Thu, 6 Aug 2009 16:15:41 -0400
Its AS-29 Titled " A 2 kilowatt 3-400z Linear for Six Meters. by William I Orr w6sai It appears to be from a published art. in QST although they give it a date. ______________________________________
/archives//html/Amps/2009-08/msg00101.html (9,433 bytes)

19. Re: [Amps] Design VS parasitic (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Mon, 24 Aug 2009 16:23:06 -0400
I installed the Measures nichrome kit in a friends Henry 3k/8877. This was after he did it and blew a tube. The solder connections he made with the supplied materials was horrible. I followed the ins
/archives//html/Amps/2009-08/msg00459.html (11,402 bytes)

20. Re: [Amps] RF parts and parasitics!! (score: 1)
Author: Jack Shirley <jcshirle@gmail.com>
Date: Wed, 26 Aug 2009 13:08:29 -0400
This is the way it is done on the AL1200 _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2009-08/msg00500.html (10,878 bytes)

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