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1. [Amps] Tim Hulick's passing (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Tue, 22 Jan 2008 16:00:27 -0600
I'm sure some of may already have read about this, but for those who have not. Tim Hulick, W9QQ, lost his battle with cancer on Dec 28. Some of you knew him for his work with microwave circuitry, par
/archives//html/Amps/2008-01/msg00152.html (6,604 bytes)

2. [Amps] LK-450 (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Fri, 7 Mar 2008 13:00:26 -0600
Does anyone here know the PTT keying circuitry for this amp? I just need to know whether it keys the relays directly to ground or whether there is a keying transistor involved. Thanks very much. 73 D
/archives//html/Amps/2008-03/msg00069.html (6,848 bytes)

3. [Amps] relays (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Tue, 1 Apr 2008 08:58:13 -0500
More info on the above. There is a relay made by Schrack (German co) that is 12VDC, SPDT, PC mount with double pin-outs. They are enclosed in plastic and have very robust specs. I have used these wit
/archives//html/Amps/2008-04/msg00013.html (7,226 bytes)

4. [Amps] 3CX3000A7 input impedance (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Wed, 16 Apr 2008 13:53:30 -0500
According to "Triode" software by KD9JQ, with 4K as the output power and with 4KV on the anode, the input impedance is almost exactly what you recollected. It varies from 50-54 ohms over the freq ran
/archives//html/Amps/2008-04/msg00219.html (7,707 bytes)

5. Re: [Amps] six meter amps (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Thu, 16 Oct 2008 06:47:06 -0500
Morning, guys..... If anyone has a six meter amp for sale, please contact Joey, W5BAK, in Houston, TX. His email info is listed above. Thank you. 73 Dick, K5AND ______________________________________
/archives//html/Amps/2008-10/msg00072.html (6,478 bytes)

6. [Amps] Eimac triodes, again (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Thu, 8 Jan 2009 08:27:16 -0600
Guys.... Agreed that $900-1200 is a LOT of green to part with for this sort of tube. But rather than chase after a tube with a LONG grid lead which may or may not be stable in your homebrew circuit o
/archives//html/Amps/2009-01/msg00060.html (6,742 bytes)

7. [Amps] Commander 2500E for sale (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Sun, 28 Feb 2010 17:34:08 -0600
Hello... The above amp is a limited production unit using a pair of 8877s and is in mint condition (new). I am the original owner, and it has been in a non-smoking environment. The amp and Eimac tube
/archives//html/Amps/2010-02/msg00763.html (6,655 bytes)

8. [Amps] 48VDC power supply mating connectors (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Mon, 5 Apr 2010 16:17:26 -0500
Howdy... For those of you using or contemplating the surplus hp or emerson 48VDC at 57 amp power supplies, here is a source, finally, for the mating connectors. These supplies, assuming you NEED one,
/archives//html/Amps/2010-04/msg00126.html (7,157 bytes)

9. [Amps] HV toroid, ebay item # 370270095930 (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Thu, 22 Apr 2010 13:23:13 -0500
Howdy.... A week or so ago, someone posted that the above units were being sold on eBay. So, liking HV goodies, I checked it out. Looked good, so ordered one. It arrived today and pleased to say, see
/archives//html/Amps/2010-04/msg00608.html (7,454 bytes)

10. [Amps] Larcan lo - lo band VHF 1kw amplifier (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Tue, 18 May 2010 11:39:25 -0500
Hello.... I have two of these amps which were purchased on the eBay auctions originating on the Larcan amp site which took place several months ago. I have since purchased one of the new M2 'travel'
/archives//html/Amps/2010-05/msg00178.html (7,255 bytes)

11. [Amps] 4CX250B Ratings in Dentron Clipperton V (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Sat, 22 May 2010 16:38:12 -0500
All these points are well and good about screen peaks, within the limits of the screen dissipation etc. Heck, we could even add a grid current meter to make things really interesting, and pray never
/archives//html/Amps/2010-05/msg00306.html (9,389 bytes)

12. Re: [Amps] 5CX1500 socket ( changed subject ) (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Wed, 15 Dec 2010 15:56:46 -0600
The 5CX1500A is a good tube and extremely 'robust'. But, like its smaller siblings, the 4CX1000A and 4CX1500B, can become unruly if the amp design is inherently unstable. There are several proven opt
/archives//html/Amps/2010-12/msg00169.html (11,571 bytes)

13. Re: [Amps] Help with HL2200 6 meter conversion (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Sat, 22 Jan 2011 04:17:41 -0600
Morning, Gary..... First of all, congrats on your project! Glad to see more folks out there willing to do conversions etc to get more db on six. have too much minimum C. A 100pf variable is likely to
/archives//html/Amps/2011-01/msg00222.html (12,916 bytes)

14. Re: [Amps] 3CX1200D7 availability (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Fri, 16 Sep 2011 08:39:30 -0500
Better tube at same price would be YU181,YC229 or 3CX1200Z7. The YC229 has a bigger/better anode cooler than either the D7, Z7 or 181. But....there is a grid ring to deal with...so that might be retr
/archives//html/Amps/2011-09/msg00114.html (8,436 bytes)

15. [Amps] hp power supply 373701-001 (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Sun, 4 Dec 2011 11:16:36 -0600
Howdy.... Just wondering if anyone here is familiar enough with the above 50VDC 37amp supply to know the pin-outs? Not sure how to turn it on? Note: these supplies are different from the 57amp units.
/archives//html/Amps/2011-12/msg00029.html (6,463 bytes)

16. [Amps] Dahl plate trans for sale/Dayton (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Sun, 28 Apr 2013 11:01:18 -0500
Hello. I have two NOS Alpha transformers, PN TPX-X167-1, by Peter Dahl for sale. Hypersil cores, 72lbs each; 7.5"H, 7"W, 10.5"L Primary is dual 100-110-120/200-220-240; secondaries: 2665-2335-2000 VA
/archives//html/Amps/2013-04/msg00239.html (6,928 bytes)

17. [Amps] hv trans (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Sun, 28 Apr 2013 12:58:57 -0500
Both trans have been sold. Thanks. 73 Dick, K5AND _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2013-04/msg00241.html (6,427 bytes)

18. [Amps] six meter amps (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Wed, 1 May 2013 20:44:53 -0500
All the Larcan and Harris amps have been sold. Thank you. Dick, K5AND _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinf
/archives//html/Amps/2013-05/msg00004.html (6,483 bytes)

19. [Amps] six meter amps for sale/Dayton (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Wed, 1 May 2013 06:42:55 -0500
Hello... I have two Harris 1KW solid-state amps and one Larcan lo-lo amp (KW) for sale. They are unmodified & in excellent condition. Your choice, $250 each, plus UPS CONUS, or, can deliver to flea s
/archives//html/Amps/2013-05/msg00011.html (7,064 bytes)

20. [Amps] fil trans for sale for 3-400 and 3-500Z (score: 1)
Author: "Dick Hanson" <dick@dkhanson.com>
Date: Fri, 3 May 2013 06:36:52 -0500
Hello... I have six each Triad NOS filament transformers to sell. Triad F-10U, 115VAC primary to 5VAC CT @ 14A. $15 each, plus shipping CONUS, or deliver to Dayton. Please contact off list. 73 Dick,
/archives//html/Amps/2013-05/msg00035.html (6,504 bytes)

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