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References: [ +from:elmore@nssl.noaa.gov: 17 ]

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1. [Amps] TL922 AMP PROBLEMS (score: 1): Author: elmore@nssl.noaa.gov (Kim Elmore); Date: Tue, 08 Oct 2002 09:38:55 -0500; A quick note about using DC brush-less fans: At least some types have little DC-to-AC inverters in them, and the fan motor really runs on AC (a few kHz, I think). In my case, I found the inverter was; /archives//html/Amps/2002-10/msg00071.html (13,279 bytes)
2. [Amps] Meter Faces (score: 1): Author: elmore@nssl.noaa.gov (Kim Elmore); Date: Mon, 28 Oct 2002 11:25:01 -0600; Do any of you have a favorite way of printing new, multi-scale meter faces? And, when you do this, what do you print it on (equivalently, how do you attach it to the old face)? I'd like to change the; /archives//html/Amps/2002-10/msg00295.html (7,187 bytes)
3. [Amps] Regulated HV? (score: 1): Author: elmore@nssl.noaa.gov (Kim Elmore); Date: Tue, 29 Oct 2002 09:44:42 -0600; Kim Elmore, N5OP Kim Elmore, Ph.D. University of Oklahoma Cooperative Institute for Mesoscale Meteorological Studies "All of weather is divided into three parts: Yes, No, and Maybe. The greatest of t; /archives//html/Amps/2002-10/msg00300.html (7,063 bytes)
4. [Amps] A general question about why anodes get hot (score: 1): Author: elmore@nssl.noaa.gov (Kim Elmore); Date: Wed, 18 Sep 2002 08:56:10 -0500; Amidst all the nostalgia over AM (my Dad, W5JHJ, still has a working Globe Champion with 275 W of plate-modulated AM; I vividly remember watching the 866A mercury-vapor rectifiers glow blue and pulsa; /archives//html/Amps/2002-09/msg00124.html (7,829 bytes)
5. [Amps] Re: What heats the anode (score: 1): Author: elmore@nssl.noaa.gov (Kim Elmore); Date: Fri, 20 Sep 2002 10:07:10 -0500; Thanks to all of you for your insightful replies. This all appears to be a bit like an efficiency issue: how much of the available energy can we actually use? The electrons possess kinetic energy, ob; /archives//html/Amps/2002-09/msg00151.html (8,452 bytes)
6. [Amps] CTI follow up - miscellaneous ramblings (score: 1): Author: elmore@nssl.noaa.gov (Kim Elmore); Date: Wed, 26 Jun 2002 09:06:18 -0500; Now *THIS* is funny! I haven't laughed out loud at a post for a long, long time. 73, Kim Elmore, N5OP Kim Elmore, Ph.D. "All of weather is divided into three parts: Yes, No, and Maybe. The greatest o; /archives//html/Amps/2002-06/msg00229.html (8,866 bytes)
7. [Amps] RF Ground for 2nd Floor (score: 1): Author: elmore@nssl.noaa.gov (Kim Elmore); Date: Mon, 15 Apr 2002 10:18:43 -0500; In the forseeable future, we may be building a new house. Both my wife and I have always wanted a two-story home, so we have our chance. Since we are both professionals, we'll both have our own offic; /archives//html/Amps/2002-04/msg00365.html (8,183 bytes)
8. [Amps] Air Chimneys for 3-500Z and Anode Dissipation (score: 1): Author: elmore@nssl.noaa.gov (Kim Elmore); Date: Thu, 07 Mar 2002 13:12:31 -0600; Talk of blower capacities lead me to wonder about glass envelope tubes. Here are some of my questions: I've never seen an air chimney system used on 3-500Zs. Yet, Eimac specified the dissipation valu; /archives//html/Amps/2002-03/msg00131.html (8,437 bytes)
9. [Amps] My AL80-A Project (score: 1): Author: elmore@nssl.noaa.gov (Kim Elmore); Date: Tue, 12 Mar 2002 10:46:34 -0600; Hi all, A few weeks ago, I mentioned that I had an AL80-A that I had modified for a higher B+ voltage, mainly for the educational value. After putting it back into service after a 7 yr hiatus, I had; /archives//html/Amps/2002-03/msg00252.html (10,442 bytes)
10. [Amps] Re: [Amps] Re: [Amps] Re: [Amps] Re: [ Amps]Bird® 43 Manual (score: 1): Author: elmore@nssl.noaa.gov (Kim Elmore); Date: Thu, 28 Mar 2002 10:11:05 -0600; I'll put in my $0.02 and then be silent (I promise!). No. Watt meters that hams and most engineers use at RF measure either voltage or Current. They do not measure *power*. Given the voltage or curre; /archives//html/Amps/2002-03/msg00656.html (10,999 bytes)
11. [Amps] Re: Bird® 43 Manual (score: 1): Author: elmore@nssl.noaa.gov (Kim Elmore); Date: Thu, 28 Mar 2002 11:44:18 -0600; I believe that the logical flaw in the argument lies in discussing reflected *power*. *Power* cannot reflected; only voltage and current are reflected. We speak of reflected power merely as a conveni; /archives//html/Amps/2002-03/msg00663.html (11,570 bytes)
12. [Amps] Re: [Amps] Re: Bird® 43 Manual (score: 1): Author: elmore@nssl.noaa.gov (Kim Elmore); Date: Thu, 28 Mar 2002 12:41:43 -0600; Thanks, Paul. Yes, I *think* that would be correct. I'm sure someone will tell us otherwise if it isn't. Rather than being absorbed, what if we thought of it as having never left? While a very poor a; /archives//html/Amps/2002-03/msg00666.html (11,384 bytes)
13. [Amps] Re: [Amps] Re: Bird® 43 Manual (score: 1): Author: elmore@nssl.noaa.gov (Kim Elmore); Date: Thu, 28 Mar 2002 12:55:33 -0600; I sort of thought I said that, though probably not well. Alas, I'm not an EE, and I'm sure many on the list are. In any event, yes, I agree with your gedunken results. I think, however, that my argum; /archives//html/Amps/2002-03/msg00667.html (14,372 bytes)
14. [AMPS] Interesting Characteristic of DC "Brushless Fans" (score: 1): Author: elmore@nssl.noaa.gov (Kim Elmore); Date: Sun, 03 Feb 2002 13:44:56 -0600; My AL-80A had a noisy AC fan. The noise was mainly AC motor noise, rather than fan-blade or air noise (hum/buzz/whine). The amplifier case made a very good sound board for the fan motor, so, I decide; /archives//html/Amps/2002-02/msg00042.html (7,757 bytes)
15. [AMPS] mof resistors (score: 1): Author: elmore@nssl.noaa.gov (Kim Elmore); Date: Fri, 22 Feb 2002 09:22:34 -0600; That's odd. I recently bought some metal oxide resistors manufactured by Xircon from Mouser. I also just looked at Mouser's site and they still carry them. Am I ignorant of a fundamental difference b; /archives//html/Amps/2002-02/msg00226.html (8,132 bytes)
16. [AMPS] Weird matching problem... (score: 1): Author: elmore@nssl.noaa.gov (Kim Elmore); Date: Sun, 24 Feb 2002 22:20:01 -0600; I have an Ameritron AL-80A that I've modified for a higher B+ voltage (about 3600 VDC at 400 mA) and it generally works quite well. I've also added new, much quieter, brushless DC fan which now works; /archives//html/Amps/2002-02/msg00264.html (9,629 bytes)
17. [AMPS] Parasitic Experience? What to do? (LONG) (score: 1): Author: elmore@nssl.noaa.gov (Kim Elmore); Date: Mon, 28 Jan 2002 10:28:55 -0600; Hi all, I've been watching the list for a few days to get the feel of it and have decided to post a recent experience, reveal my foolishness, and ask for advice. I've owned an AL-80A since about 1987; /archives//html/Amps/2002-01/msg00226.html (11,931 bytes)

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