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References: [ +from:dhearn@air-pipe.com: 46 ]

Total 46 documents matching your query.

21. Re: [Amps] diodes wanted (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Sat, 23 Jun 2007 13:01:10 -0700
Hi Lon. I have a number of HV diode units for sale that would work. You can see them at www.sdxa.org click for sale. Items B,D,and I are sold and my email ads is not correct. It is www.dhearn@air-pip
/archives//html/Amps/2007-06/msg00129.html (8,017 bytes)

22. Re: [Amps] Dentron 1200L (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Sun, 1 Jul 2007 10:04:39 -0700
Hi Troy. The amp has an internal relay which needs to be closed to amplify the 570D output. The back contacts of this relay bypass the amp sending the 570D output thru to the antenna. It makes no dif
/archives//html/Amps/2007-07/msg00008.html (9,716 bytes)

23. Re: [Amps] Dentron 1200L (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Sun, 1 Jul 2007 10:07:42 -0700
I just noticed that you do not have a manual for the amp. You can use your voltmeter to measure the voltage between the amp relay connector and ground to see what the relay coil voltage is. 73, Dan H
/archives//html/Amps/2007-07/msg00009.html (8,672 bytes)

24. Re: [Amps] re specs on Rotron 110AS blower (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Sat, 18 Aug 2007 17:58:31 -0700
8877 air need depends on anode diss. and altitude,sheet sez. For 1000w diss @ sea level needs 22.5cfm and press. drop is o.20 in. H2o. At 10,000 ft numbers are 32.5cfm and 0.29 in. H20. Air flow is a
/archives//html/Amps/2007-08/msg00114.html (8,187 bytes)

25. Re: [Amps] re specs on Rotron 110AS blower (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Sat, 18 Aug 2007 18:02:33 -0700
Pauls numbers are the ones shown on my sheet for anode diss 1500w. 73, Dan, N5AR --Original Message-- From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com]On Behalf Of Paul Kelley N1
/archives//html/Amps/2007-08/msg00115.html (8,909 bytes)

26. Re: [Amps] SB-200 circuit breaker (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Sun, 26 Aug 2007 20:39:37 -0700
Tom, I once had a similar problem with my air conditioner, it would run for several minutes and then the breaker would kick out. I was ready to think about replacing the compressor when a maintenance
/archives//html/Amps/2007-08/msg00202.html (7,961 bytes)

27. Re: [Amps] procedure to resonate hv choke in ps (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Sat, 29 Sep 2007 11:31:39 -0700
Fern, a search of Amps archives gives 115 references for tuned filter choke. I recall that you do not want it to be at precise resonamce but off on the slope or large HV across choke. You may need to
/archives//html/Amps/2007-09/msg00494.html (8,204 bytes)

28. Re: [Amps] procedure to resonate hv choke in ps (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Sat, 29 Sep 2007 12:00:31 -0700
Fern, a search of Amps archives gives 115 references for tuned filter choke. I recall that you do not want it to be at precise resonamce but off on the slope or large HV across choke. You may need to
/archives//html/Amps/2007-09/msg00495.html (8,075 bytes)

29. Re: [Amps] Winding large inductors (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Tue, 20 Nov 2007 13:37:50 -0800
Dennis, I have heard of people filling the tubing with sand to prevent it from kinking. I would think you could push or pull on the end of the inductor to adjust turn spacing. How about using small n
/archives//html/Amps/2007-11/msg00288.html (7,686 bytes)

30. Re: [Amps] Johnson Roller Inductor (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Mon, 31 Dec 2007 16:51:24 -0800
Does your inductor look like the ones shown here? It looks like possibly yours is one of this family but a value not shown. I have a couple of this type which I have measured for inducance. How many
/archives//html/Amps/2007-12/msg00299.html (7,579 bytes)

31. Re: [Amps] E F Johnson Inductor (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Tue, 1 Jan 2008 09:53:31 -0800
This is yourr lucky day Bob. One of my 226 inductors appears to be the same as yours. It measures 22 microhenries. 73, Dan, N5AR HNY to all and thanks to those who responded regarding the Johnson 226
/archives//html/Amps/2008-01/msg00008.html (7,562 bytes)

32. [Amps] (no subject) (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Tue, 19 Feb 2008 09:17:56 -0800
I have several Aerovox energy discharge caps rated at 38mfd and 5kvdc peak. What would be a suitable rating for use in a full wave rectified ham PS? 73, Dan, N5AR ____________________________________
/archives//html/Amps/2008-02/msg00127.html (6,798 bytes)

33. Re: [Amps] (no subject) (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Tue, 19 Feb 2008 10:40:23 -0800
I should have given the physical size of the caps. They are 4 x 4 1/2 x 9 inches. They are much larger than the de-fib caps shown on the Aerovox page. I think they came from some university lab surpl
/archives//html/Amps/2008-02/msg00130.html (7,583 bytes)

34. [Amps] Bird Stuff and more (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Fri, 29 Feb 2008 11:25:16 -0800
I will be at the Puyallup hamfest Mar 8 with lots of goodies for sale. Most are from Collins and TI bid sales when I lived in Dallas. I am working on pricing now but here is a preview. 1. Rare Bird d
/archives//html/Amps/2008-02/msg00221.html (7,655 bytes)

35. [Amps] Bird Stuff and More Update (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Wed, 5 Mar 2008 16:43:20 -0800
Pricing determined after checking Ebay, QRZ.com, Fair Radio Sales, MGS4U, Amps postings, Eham.net, Surplus Sales Nebraska (outrageous pricing, Hi), RF Parts, Henry radio store on Ebay, MFJ amp parts,
/archives//html/Amps/2008-03/msg00042.html (8,108 bytes)

36. Re: [Amps] open frame relay rating (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Sat, 29 Mar 2008 12:25:05 -0700
Carl, what problems have you had with vac relays? Open coils? Loss of vacuum? contact problems? 73, Dan, N5AR Yes, those are "enclosed" open frame relays. The SB-220 relay is excellent and very relia
/archives//html/Amps/2008-03/msg00346.html (10,783 bytes)

37. Re: [Amps] Relays?? Try this sight (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Tue, 1 Apr 2008 17:25:29 -0700
Who needs SPST vac relays? Not I. 73, Dan, N5AR Relays?? Try this sight http://qro-parts.com/index.php?cPath=30 _______________________________________________ Amps mailing list Amps@contesting.com h
/archives//html/Amps/2008-04/msg00026.html (7,225 bytes)

38. [Amps] Relay problems (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Wed, 2 Apr 2008 12:57:21 -0700
My Alpha 77DX developed a weak receive path problem a couple of years ago. Suspecting the T/R relay I remembered reading somewhere about magnetization of the core causing this problem. I reversed the
/archives//html/Amps/2008-04/msg00048.html (7,118 bytes)

39. Re: [Amps] Suggestions for Storage of Amps and Radios (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Fri, 11 Apr 2008 14:08:04 -0700
Troy: I have several packets of dessicant beyond my needs. Be glad to send you up to 8 or 10 (no cost). Let me know how many. Tnx for your service. 73, Dan, N5AR --Original Message-- From: amps-bounc
/archives//html/Amps/2008-04/msg00178.html (9,378 bytes)

40. Re: [Amps] 4-1000 HB amp (score: 1)
Author: "Dan Hearn" <dhearn@air-pipe.com>
Date: Thu, 24 Apr 2008 08:43:10 -0700
Ken, I accomplished the same thing using a triac light dimmer wih a rotary knob. Works great. I think your calcs do not take into account that the filament R varies as the voltage changes. 73, Dan, N
/archives//html/Amps/2008-04/msg00286.html (7,836 bytes)

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