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1. Re: [Amps] another zener question (score: 1): Author: Dennis <pegasus@mho.net>; Date: Sun, 15 Feb 2004 08:03:38 -0700; Bill Turner wrote: On Sat, 14 Feb 2004 15:46:10 -0500, w2cqm@juno.com wrote: Here's the question, If I were to lower the zener value to 10V (thereby raising the idle current closer to 500ma from the; /archives//html/Amps/2004-02/msg00119.html (7,490 bytes)
2. Re: [Amps] Shunt Feed Tower Issues (score: 1): Author: Dennis <pegasus@mho.net>; Date: Mon, 01 Nov 2004 14:17:14 -0700; Hello Javier... The rating of the capacitor is not defined by either frequency or power directly. It is determined by the voltage that appears across the plates. When using capacitors in such an ante; /archives//html/Amps/2004-11/msg00007.html (9,442 bytes)
3. Re: [Amps] 3-1000Z Filament Voltage Question (score: 1): Author: "Dennis" <pegasus@mho.net>; Date: Sun, 20 Feb 2005 10:06:21 -0700 (MST); Hello Dennis.. I´m not sure you´re getting actual answers to your questions on here so far. Yes, excessively low filament voltage will result in low power output. It´s not particula; /archives//html/Amps/2005-02/msg00621.html (14,104 bytes)
4. Re: [Amps] Shipping Damage (score: 1): Author: "Dennis" <pegasus@mho.net>; Date: Sat, 26 Feb 2005 09:19:48 -0700 (MST); I have shipped somewhere around 3,000 parcels in the last several years. I used to ship with UPS quite a few years ago. In the "old days" UPS would terminate an employee found throwing boxes. You guy; /archives//html/Amps/2005-02/msg00855.html (11,211 bytes)
5. Re: [Amps] Parasitic suppression kits (score: 1): Author: "Dennis" <pegasus@mho.net>; Date: Sat, 19 Mar 2005 09:49:33 -0700 (MST); Hello Paul, I wasn't in on earlier communications in this thread, but I can say one thing first hand. I had a persnickity AL-80 that was taking off with a loud firecracker "BANG" about every tenth t; /archives//html/Amps/2005-03/msg00416.html (8,788 bytes)
6. Re: [Amps] Parasitic suppression kits (score: 1): Author: "Dennis" <pegasus@mho.net>; Date: Sat, 19 Mar 2005 15:41:14 -0700 (MST); Hi Phil.. Yes, but I had no inclination at the time to do that. I do remember that the resistors were in good shape, not discolored or burnt. In fact, I bought the amp from a ham who was forced to s; /archives//html/Amps/2005-03/msg00424.html (7,679 bytes)
7. Re: [Amps] anode connector?? (score: 1): Author: Dennis <pegasus@mho.net>; Date: Mon, 11 Jul 2005 23:00:02 -0600; Hello Paul.. Have you checked those spare vapor tubes lately? (or at least run them several hours a year or so) I know a few people who have saved those "sealed new in box" for ten years or so.. when; /archives//html/Amps/2005-07/msg00105.html (7,554 bytes)
8. Re: [Amps] Is This 4CX1600B Still Good? (score: 1): Author: "Dennis" <pegasus@mho.net>; Date: Thu, 24 Nov 2005 09:08:24 -0700 (MST); I'm not sure, but 2.3 ohms on a cold filament of a tube that size seems a bit high. I've never measured the cold resistance on a 12 volt filament transmitting tube, (only 5 or 7 volt tubes) but it s; /archives//html/Amps/2005-11/msg00482.html (8,001 bytes)
9. Re: [Amps] series-connecting a split-stator variable cap (score: 1): Author: pegasus@mho.net; Date: Mon, 20 Mar 2006 04:50:19 -0700 (MST); I would also make sure the rotor shaft is WELL isolated from the front frame (and your hand!) by using some kind of long non-conducting shaft extention. You don't want the value of the circuit changi; /archives//html/Amps/2006-03/msg00559.html (8,881 bytes)
10. Re: [Amps] VOA Transmitters.... (score: 1): Author: pegasus@mho.net; Date: Mon, 22 May 2006 08:05:01 -0600 (MDT); Hello Mark, et al. In the mid 70s the chief engineer took myself and a friend through VOA Dixon. The engineer's call was K6NM, I long ago lost touch with him. I wonder if he was the guy you met on 40; /archives//html/Amps/2006-05/msg00275.html (10,203 bytes)
11. Re: [Amps] making aluminum heat sinks black (score: 1): Author: pegasus@mho.net; Date: Sat, 22 Jul 2006 11:58:30 -0600 (MDT); I'm still amazed why transmitter manufacturers continue to use bare aluminum material for heat sinks. It is TERRIBLE at radiating heat. Forced air is necessary for any degree of efficient cooling. T; /archives//html/Amps/2006-07/msg00888.html (8,939 bytes)
12. Re: [Amps] Ameritron Amps (score: 1): Author: pegasus@mho.net; Date: Mon, 31 Jul 2006 04:46:33 -0600 (MDT); I agree on the QSK-5, excellent product... While 3 Ameritron amps I've had all had some parasitic problems, (that were easily remedied) the worst problem I've had with the QSK-5 was a blown lamp fuse; /archives//html/Amps/2006-07/msg01423.html (11,029 bytes)
13. Re: [Amps] Stolen Radio (score: 1): Author: pegasus@mho.net; Date: Tue, 22 Aug 2006 23:21:51 -0600 (MDT); Did you try this section of Ebay? http://pages.ebay.com/securitycenter/law_enforcement.html _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesti; /archives//html/Amps/2006-08/msg00624.html (8,179 bytes)
14. Re: [Amps] AL-80B Trouble (score: 1): Author: pegasus@mho.net; Date: Sat, 26 Aug 2006 11:36:31 -0600 (MDT); Let me offer a few empirical observation... Seventeen years ago... I received 3 year old SB-1000 (AL-80 in drag) that had just been gone through by Heath factory and a new tube installed. About ever; /archives//html/Amps/2006-08/msg00677.html (11,091 bytes)
15. Re: [Amps] Floating Elevated Radials (score: 1): Author: pegasus@mho.net; Date: Fri, 29 Dec 2006 20:01:30 -0700 (MST); I agree with Tom completely... When you have elevated (or insulated) radials you should never tie the coax to a "DC" ground at the feedpoint. I discovered this by accident doing mobile experiments ov; /archives//html/Amps/2006-12/msg00224.html (10,105 bytes)
16. Re: [Amps] 3CV1500A7 (score: 1): Author: pegasus@mho.net; Date: Tue, 6 Feb 2007 22:28:33 -0700 (MST); Hi Paul... It might make sense to take those spare CVs out of Fort Knox and put filament voltage on them once in a while. The below-mentioned W5GEL had a new spare that he kept handy for some 15 or; /archives//html/Amps/2007-02/msg00110.html (9,812 bytes)
17. Re: [Amps] 3CV1500A7 (score: 1): Author: pegasus@mho.net; Date: Wed, 7 Feb 2007 09:59:51 -0700 (MST); Hello Paul.. There could be two schools of thought here. There could be some danger to the filament as voltages are rising, cathode isn't fully hot yet, maybe the grid isn't sufficiently negative ye; /archives//html/Amps/2007-02/msg00121.html (9,614 bytes)
18. Re: [Amps] Burn in Question - 811A tubes (score: 1): Author: pegasus@mho.net; Date: Wed, 11 Jul 2007 09:51:17 -0600 (MDT); Hi Dan... I have a "sense" of what is common practice among seasoned hams who have learned through experience on such matters. Generally with new tubes you don't have to do a "burn in". They are run; /archives//html/Amps/2007-07/msg00193.html (8,850 bytes)

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