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1. [Amps] Meeting notice (score: 1): Author: zellmer@raccoon.com (zellmer); Date: Wed, 16 Oct 2002 15:52:04 +0200; -- StripMime Report -- processed MIME parts -- multipart/alternative text/html audio/x-midi application/octet-stream -- StripMime Errors -- A message with no text/plain section was received. The enti; /archives//html/Amps/2002-10/msg00169.html (6,234 bytes)
2. Subject: Re: [AMPS] Dentron L Tuned Input (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Fri, 7 Jul 2000 21:30:42 -0500; input. Mike, My memory may be faulty, but I seem to remember someone on the Amp list mentioning that a transformer could be used to help the input impediences of a ML-2500. I seem to remember that th; /archives//html/Amps/2000-07/msg00043.html (8,484 bytes)
3. [AMPS] Wire Size for SS amp. (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Thu, 3 Feb 2000 19:36:04 -0600; To: <amps@contesting.com> need should I Go down to your local welding supply store. They will have some really nice flexible #4 Gage welding cables that would work great for your application. Ask the; /archives//html/Amps/2000-02/msg00062.html (7,172 bytes)
4. [AMPS] Dentron MLA-2500 Project (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Sun, 20 Feb 2000 01:41:01 -0600; I picked up a Dentron MLA-2500 a couple of months ago and have been going thru it. The PS filter caps were a mix of Spragues and CDEs. I pulled the old caps and ordered 8 Panasonic 220 MF 450 volt el; /archives//html/Amps/2000-02/msg00387.html (8,570 bytes)
5. [AMPS] Caps on Dentron ML-2500 (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Mon, 17 Jan 2000 21:08:52 -0600; I have am going thru the process of reforming the PS caps in a ML-2500 amp. I am using a Eico 950B resistance capacitance comparator bridge for a variable PS and am measuring the ma by monitoring the; /archives//html/Amps/2000-01/msg00377.html (8,225 bytes)
6. [AMPS] Caps on Dentron ML-2500 (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Mon, 17 Jan 2000 21:10:54 -0600; I have am going thru the process of reforming the PS caps in a ML-2500 amp. I am using a Eico 950B resistance capacitance comparator bridge for a variable PS and am measuring the ma by monitoring the; /archives//html/Amps/2000-01/msg00378.html (8,244 bytes)
7. [AMPS] Caps on Dentron ML-2500 (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Mon, 17 Jan 2000 21:11:00 -0600; I have am going thru the process of reforming the PS caps in a ML-2500 amp. I am using a Eico 950B resistance capacitance comparator bridge for a variable PS and am measuring the ma by monitoring the; /archives//html/Amps/2000-01/msg00379.html (8,252 bytes)
8. [AMPS] Caps on Dentron ML-2500 (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Mon, 17 Jan 2000 21:12:36 -0600; I have am going thru the process of reforming the PS caps in a ML-2500 amp. I am using a Eico 950B resistance capacitance comparator bridge for a variable PS and am measuring the ma by monitoring the; /archives//html/Amps/2000-01/msg00380.html (8,251 bytes)
9. [AMPS] QRO TORROID (WAS MORE USEFUL SUPPLY. (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Sun, 23 Jan 2000 09:43:38 -0600; Rich and Plil have had an interesting discussion on torroid types, Here is a follow up question. If the type 61 starts to saturate at 10 MHz and is good to 30 MHZ at QRPP levels, what types are good; /archives//html/Amps/2000-01/msg00485.html (8,047 bytes)
10. [AMPS] A gift of good humor to my friends. (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Thu, 2 Dec 1999 17:09:44 -0600; I always admire people who can get a message across. This is a good example. According to a radio report, a middle school in Oregon was faced with a unique problem. A number of girls were beginning t; /archives//html/Amps/1999-12/msg00016.html (7,853 bytes)
11. [AMPS] Questions on MLA2500 (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Mon, 22 Nov 1999 01:00:59 -0600; I am looking at acquiring a MLA2500. The rig is clean, nothing burnt, but has not been fired up for a few years. Former owner used it very little. Any comments, pointers or caveats on this amp? And i; /archives//html/Amps/1999-11/msg00441.html (6,951 bytes)
12. [AMPS] go figure/Murata mm vs 1/4- 20 threads (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Tue, 29 Jun 1999 17:50:32 -0500; If the threads in the Murata caps are metric and the 1/4 20 fit, you probably snuck by with a length of thread connection. A 2mm pitch metric thread has a lead of about .052" per revolution. vs. abou; /archives//html/Amps/1999-06/msg00785.html (8,546 bytes)
13. [AMPS] re:Socket for 3-500Z (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Sun, 4 Apr 1999 09:20:45 -0500; I picked up a quart of Molil one synthetic oil for this kind of application. It is has a 5W-30 rating, but seems a little thinner. I use it on my window fans, 2 or three drops on each end every year; /archives//html/Amps/1999-04/msg00064.html (10,203 bytes)
14. [AMPS] Advance relay for RF switching on HT-45 (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Sun, 14 Mar 1999 05:22:30 -0600; I recently picked up several relays. One of interest is an Advance Elec. Co. Pn 210800-48 Type No. 1004A-18. It is a DPDT &SPST (SPST is normally open). The contacts are rated at 2000 V at 1/2 amp co; /archives//html/Amps/1999-03/msg00275.html (7,061 bytes)
15. [AMPS] Adhesives for sticking down HV PS caps (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Sat, 20 Feb 1999 23:21:53 -0600; Another adhesive that is worth investiagating is "Shoe Goo". It sets up quickly, Dries to the consistance of silicon adhesives and is tencasious as heck. It comes in several varieties. Check you lock; /archives//html/Amps/1999-02/msg00534.html (7,734 bytes)
16. [AMPS] Looking for 4-400 or 4-250 tubes (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Fri, 4 Dec 1998 16:50:15 -0600; I am in need of a couple 4-400s for my Invader 2000. I also seem to remember reading somewhere that 4-250s would work ok in the Invader since the HV is around 2100 Volts. Could use an extra 4-400 for; /archives//html/Amps/1998-12/msg00053.html (6,823 bytes)
17. [AMPS] PL-172 specs (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Wed, 5 Aug 1998 17:48:59 -0500; I have a copy of the 1959 penta lab catalog and pulled the following specs out for a PL-172 used in AB1 RF amplifier service. at 3000 Volts DC Plate Voltage 3000 Volts DC Sceen Supressor Voltage 500; /archives//html/Amps/1998-08/msg00042.html (7,276 bytes)
18. [AMPS] Looking for speces on 8908 sweep tubes (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Wed, 5 Aug 1998 17:57:12 -0500; I recently picked up a pair of 8908 tubes at a hamfest. The tubes are labeled with a Hygain label. My ARRL handbooks do not list these tubes. Does any one have specs for them. I am wondering if they; /archives//html/Amps/1998-08/msg00044.html (6,880 bytes)
19. [AMPS] Carbon Composition Resistors (Swamping Network for Halllicrafters HT-33 A amplifier) (score: 1): Author: zellmer@raccoon.com (Jim Zellmer); Date: Thu, 27 Aug 1998 19:21:46 -0500; I have a Hallicrafters HT-33A amp sitting on my project shelf. The orginal swamping resistor network consisted of 3 200 ohm 20 watt globar resistors. One is missing and the others have changed in val; /archives//html/Amps/1998-08/msg00225.html (9,486 bytes)

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