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381. [AMPS] Follow Up on the SB-220 Follow UP (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 18 Mar 99 09:33:45 -0600; Yeah but Rich, he said the amp was in standby meaning "unkeyed." If you think that he had a parasitic event while unkeyed, please explain how this could happen. I always belived that a tube in cutof; /archives//html/Amps/1999-03/msg00410.html (8,728 bytes)
382. [AMPS] More on the SB220 (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 18 Mar 99 09:51:47 -0600; Don't know why a 2W wirewound would have more dissipation capability than a 2W metal film. I'd put in a bigger wattage value anyhow if that's what keeps blowing. Agreed. Everything bad that happens; /archives//html/Amps/1999-03/msg00413.html (9,140 bytes)
383. Fwd: Re: [AMPS] More on the SB220 (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 18 Mar 99 10:17:40 -0600; I guess we learn something every day! Didn't think of this! 73, Jon KE9NA A high current transient will open a film resistor but not a wire wound or carbon comp. resistor. Sometimes a film resistor c; /archives//html/Amps/1999-03/msg00416.html (9,083 bytes)
384. [AMPS] Follow Up on the SB-220 Follow UP (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 18 Mar 99 11:06:00 -0600; I guess it happens to those who think that every bang is a parasitic oscillation. For one, with proper suppressor resistors you shouldn't have an oscillation. I don't think the oscillation changes t; /archives//html/Amps/1999-03/msg00422.html (9,878 bytes)
385. [AMPS] Instant ON.. (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 18 Mar 99 15:26:16 -0600; I have a question about all this instant on stuff: So your amp is sitting there off with the bandswitch on 20 meters. Say you hear your DX, turn the amp on but what happens then to the tuning? You s; /archives//html/Amps/1999-03/msg00442.html (8,616 bytes)
386. [AMPS] Ryker may have caused the SB-220 failure (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 18 Mar 99 15:46:45 -0600; No, no, no Phil! It must have been infested with Tribbles! 73, Jon KE9NA -- Jon Ogden jono@enteract.com www.qsl.net/ke9na "A life lived in fear is a life half lived." -- FAQ on WWW: http://www.conte; /archives//html/Amps/1999-03/msg00443.html (8,060 bytes)
387. [AMPS] Chokes and Dipping chokes? (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 18 Mar 99 15:53:08 -0600; Rich, Why would a contest cause damage when normal heavy use doesn't? Either the choke is resonant and sucks up power or it doesn't. If it doesn't cause problems from transmitting once, it won't fro; /archives//html/Amps/1999-03/msg00444.html (9,737 bytes)
388. [AMPS] Follow Up on the SB-220 Follow UP (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 18 Mar 99 16:07:57 -0600; O-rings in solid rocket boosters has nothing to do with this. You've still not explained how an amp biased in cut-off can have an oscillation. If you can explain this to my satisfaction, then fine.; /archives//html/Amps/1999-03/msg00445.html (12,970 bytes)
389. [AMPS] Follow Up on the SB-220 Follow UP (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 18 Mar 99 17:08:39 -0600; My point exactly. Likely the resistors went bad and THEN you had the oscillation. And I doubt the amp was in cutoff. I could see that could happen. 73, Jon KE9NA -- Jon Ogden jono@enteract.com www.q; /archives//html/Amps/1999-03/msg00448.html (10,206 bytes)
390. [AMPS] Follow Up on the SB-220 Follow UP (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Fri, 19 Mar 1999 07:32:40 -0600; Rich, Define "overheated." I bet that the temps most anode suppressor resistors are see are in excess of what the manufacturer thought they'd see. I believe that yes, a failure that happens graduall; /archives//html/Amps/1999-03/msg00481.html (9,283 bytes)
391. [AMPS] Congrats SM2CEW (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Sat, 20 Mar 1999 08:57:17 -0600; Congrats to Peter, SM2CEW, for being the first AMPS reflector member to hear me on the air with my new toy. Thanks for the QSO, Peter. Anyhow, someone once told me that good DX never comes looking fo; /archives//html/Amps/1999-03/msg00507.html (7,302 bytes)
392. [AMPS] misc topics (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Sun, 21 Mar 1999 21:49:38 -0600; The best was when I went to Japan one time and at my hotel they gave me a couple of little magnets stuck on what looked like band-aids. You were supposed to put them on your muscles that had become; /archives//html/Amps/1999-03/msg00538.html (7,830 bytes)
393. [AMPS] Unitrode & Microsemi PIN diodes (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 22 Mar 99 09:12:57 -0600; A gentleman named Gerry Hiller is one of the leading experts on PIN designs. He originally worked at Unitrode and probably did some of these PIN designs. He also worked at M/A-Com where he wrote a l; /archives//html/Amps/1999-03/msg00554.html (7,734 bytes)
394. [AMPS] Fwd: [Yaesu] F.S. Eimac SK-800A socket for 4CX1000A series (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 25 Mar 99 08:52:38 -0600; Reply to the original poster. Not me! Jon -- Begin Forwarded Message -- To: <amps@contesting.com> Date: 03/24 21:10 Received: 03/25 08:48 From: Fern Rivard, crc@cyberlink.bc.ca To: yaesu@qth.net CC:; /archives//html/Amps/1999-03/msg00609.html (7,604 bytes)
395. [AMPS] Cathode Impedance Measurements (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 25 Mar 99 11:19:55 -0600; OK, I had promised to report back on this subject, so here goes: Back a month or two ago, I said that I was going to simulate the impedance of my 4-1K's cathode by using two 220 Ohm resistors from ea; /archives//html/Amps/1999-03/msg00610.html (9,485 bytes)
396. [AMPS] Daiwa Remote Power Meter Head (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 25 Mar 99 11:22:47 -0600; This isn't EXACTLY amplifier related, but is QRO related: My Daiwa power meter (I forget model number) has the capability of having a remote power meter head attached to it. It's their 3KW peak readi; /archives//html/Amps/1999-03/msg00611.html (7,243 bytes)
397. [AMPS] Cathode Impedance Measurements (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 29 Mar 99 10:31:40 -0600; Well, I thought I covered it when the subject was first brought up a couple of months ago. Undoubtably I agree. Correct. You stated it very well. It's the average value that the exciter sees over th; /archives//html/Amps/1999-03/msg00663.html (10,251 bytes)
398. [AMPS] Cathode Impedance Measurements (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 29 Mar 99 10:45:41 -0600; Because it can be VERY inconvenient to have to fire up the amp each time you are trying different capacitor values and finding out you have the wrong one! It takes mucho more time. And since a Q of; /archives//html/Amps/1999-03/msg00664.html (10,788 bytes)
399. [AMPS] Cathode Impedance Measurements (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 29 Mar 99 10:52:03 -0600; Amplifier manufacturers specify this in their data sheets - driving impedance. But yes, you are correct. If you don't know the driving impedance value, you are shooting in the dark! 73, Jon KE9NA --; /archives//html/Amps/1999-03/msg00665.html (9,059 bytes)
400. [AMPS] HV on tube w/o filament voltage (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 29 Mar 99 10:59:10 -0600; Hi all, Got a question: How hard is it on a tube to have the HV applied to the plate w/o the filaments turned on. The reason I ask is that unknown to me, a relay must have stuck in my power supply co; /archives//html/Amps/1999-03/msg00666.html (7,945 bytes)

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