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141. Re: [Amps] Cheap network analyser on eBay (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Sat, 25 Jun 2005 21:36:54 +0100; It should like it is a better bet then. I have quite an admiration for HP and their instruments and often feel their used kit is better value than the cheap junk on the ham market. But that N2PK devi; /archives//html/Amps/2005-06/msg00236.html (9,695 bytes)
142. [Amps] HP manuals on the web + loan your manuals to Agilent. (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Sat, 25 Jun 2005 22:17:38 +0100; There has been some discussion on most electronic related newsgroups and mailing lists including (I think) here about Agilent's position on people putting HP manuals on the web. I'm now listed on the; /archives//html/Amps/2005-06/msg00238.html (12,412 bytes)
143. Re: [Amps] HV Switch Mode Power Supplies (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Sat, 25 Jun 2005 22:42:12 +0100; Actually, if you look carefully, you will see the chart does not start at 0.0 A, but at 0.1 A. Reading the "specs" they say to keep the load at least 200 mA. I got a private email from someone saying; /archives//html/Amps/2005-06/msg00239.html (16,062 bytes)
144. Re: [Amps] Cheap network analyser on eBay (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Sun, 26 Jun 2005 01:23:53 +0100; Shame that. I assume if the source code for the software is available, then doing it would not be hard. I suspect 99% (if not all) new printers are USB or ethernet, and not parallel. I have an inkjet; /archives//html/Amps/2005-06/msg00241.html (10,031 bytes)
145. [Amps] Wanted - manual (pdf) of HP 5342A micowave counter. (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Sun, 26 Jun 2005 01:44:11 +0100; Sorry this is a bit off topic, but I'm hoping someone can help. Does anyone have a manual in pdf format for the HP 5342A microwave counter (10Hz to 18GHz)? Yes, I know they can be bought from eBay fr; /archives//html/Amps/2005-06/msg00242.html (8,622 bytes)
146. Re: [Amps] filament transformer (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Fri, 08 Jul 2005 21:15:53 +0100; The primary current will depend on the secondary current. With no load, the primary will draw very little (just the magnetising current). So unless you state the heater voltage and current, one can n; /archives//html/Amps/2005-07/msg00063.html (8,490 bytes)
147. Re: [Amps] filament transformer (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Sat, 09 Jul 2005 05:07:05 +0100; Having thought about this again, there was a serious flaw in my argument. Ignoring losses, the primary current will depend ONLY on the secondary current, NOT the secondry voltage. Hence I was not rig; /archives//html/Amps/2005-07/msg00070.html (10,131 bytes)
148. Re: [Amps] Big Hopes and Pipe Dreams (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Sat, 09 Jul 2005 13:48:06 +0100; That's a long way from the most overpriced auction I have ever seen. Once someone wanted $750,000 for an old supercomputer that could take over 100 CPUs. The problem was there was few if any CPUs, pa; /archives//html/Amps/2005-07/msg00075.html (8,419 bytes)
149. [Amps] HP noise figure meters (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Sat, 09 Jul 2005 14:34:47 +0100; I was going to post this on moon-net (where the S/N is generallly higher), but the messages keep boucing for me. Can anyone who has used either (or preferably both) of the HP 8970A and 8970B noise fi; /archives//html/Amps/2005-07/msg00076.html (6,675 bytes)
150. Re: [Amps] HP5328A Counter (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Sun, 17 Jul 2005 10:55:21 +0100; Will, What you got does not seem bad for the money. If I were you though, I'd try to find another with the GPIB option, then remove the GPIB option and fit it in yours. Then sell the other counter wi; /archives//html/Amps/2005-07/msg00188.html (10,194 bytes)
151. [Amps] HP / Agilent manuals (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Sun, 17 Jul 2005 09:58:14 +0100; Following the postings some time back about Agilent scanning old HP manuals to put on their web site, I received an email from Dave Cunningham at Agilent ( dcunningham -REMOTE-AT-REMOVE agilent -REMO; /archives//html/Amps/2005-07/msg00194.html (7,828 bytes)
152. Re: [Amps] HP / Agilent manuals (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Tue, 19 Jul 2005 08:30:13 +0100; It must be a mixture at least, as the first line of it has start with an HTML tag - the normal one you would use for any HTML file. I know when I looked at the file with a text editor, I thought it w; /archives//html/Amps/2005-07/msg00205.html (8,247 bytes)
153. Re: [Amps] HP / Agilent manuals (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Tue, 19 Jul 2005 09:08:57 +0100; Sorry, Ian I can't help you, but .... I have had an a few ideas recently about test equipment manuals and how we my get them free. See http://www.southminster-branch-line.org.uk/cgi-bin/unstable (It; /archives//html/Amps/2005-07/msg00206.html (10,682 bytes)
154. Re: [Amps] 4CX250 bases (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Thu, 21 Jul 2005 21:52:13 +0100; As far as I am aware (the data sheets are on my web site) the CCS1 need a BeO base. I guess you could dispense with that if you used a small fan to keep the base seals cool, but if you want to run it; /archives//html/Amps/2005-07/msg00242.html (8,502 bytes)
155. Re: [Amps] Alpha 78 rebuild, some questions. (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Sat, 23 Jul 2005 14:30:33 +0100; With no RF drive applied, but in transmit mode, the dissipation on the tube should be easy to calculate - it's the total of anode, and filament powers. From the dissipation and temperature rise, you; /archives//html/Amps/2005-07/msg00273.html (8,650 bytes)
156. Re: [Amps] HP 3490A DMM (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Thu, 28 Jul 2005 02:03:38 +0100; You might have done better than you think, as according to the Agilent website, that meter is 6 and a half digits, not 5 and a half!! http://www.home.agilent.com/cgi-bin/pub/agilent/Product/cp_Produc; /archives//html/Amps/2005-07/msg00336.html (9,003 bytes)
157. Re: [Amps] HP 3490A DMM (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Thu, 28 Jul 2005 02:05:40 +0100; Ignore my silly comment about it being 6 1/2 digits. That is the replacement for it. You were correct, it is 5 1/2 digits. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live; /archives//html/Amps/2005-07/msg00337.html (8,530 bytes)
158. Re: [Amps] Nuclear Magnetic Pulses (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Tue, 02 Aug 2005 02:26:52 +0100; I know a bit about this, having worked in the area for some time. Essentially large currents are induced in exposed conductors. So the way to protect equipment is to have it in a Faraday cage - even; /archives//html/Amps/2005-08/msg00027.html (8,483 bytes)
159. Re: [Amps] Nuclear Magnetic Pulses (score: 1): Author: David Kirkby <david.kirkby@onetel.net>; Date: Thu, 04 Aug 2005 01:44:31 +0100; That's not true. It's what you have them in that matters. Devices no. Systems for protection, can work reasonably well. But the rise time of the pulse is fast (fall is slower), so the bandwidth is la; /archives//html/Amps/2005-08/msg00070.html (10,789 bytes)
160. Re: [Amps] Metric system (score: 1): Author: "Dr. David Kirkby" <david.kirkby@onetel.net>; Date: Thu, 04 Aug 2005 17:23:40 +0100; Nor is temperature going to be when making a 2m antenna. The expansion of the metal will not be measurable with a ruler (they will both expand at about the same rate), but furthermore, fractional cha; /archives//html/Amps/2005-08/msg00102.html (10,089 bytes)

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