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1. [AMPS] Help building mono band amp (score: 1): Author: gclute@home.com (Geo Clute W7LFD); Date: Wed, 10 Oct 2001 21:37:27 -0700; <snip> For any band up to 20 meters they kick butt and love high voltage. <snip> The 813's typical operation is to 30 MHz. I ran a pair on 10 meters with 3350VDC on the plates. Drove them with a Swa; /archives//html/Amps/2001-10/msg00281.html (8,303 bytes)
2. [AMPS] Removing Oxide from Antenna Booms (score: 1): Author: gclute@home.com (Geo Clute W7LFD); Date: Sun, 9 Sep 2001 17:36:02 -0700; I remember someone here built a PVC trough and placed elements and book into a chemical. What was the chemical used? Sorry to bring this back, but could find it in the archives. George W7LFD -- FAQ o; /archives//html/Amps/2001-09/msg00162.html (6,578 bytes)
3. [AMPS] Distortion, amp design, and 813s (newbie alert!!) (score: 1): Author: gclute@home.com (Geo Clute W7LFD); Date: Thu, 27 Sep 2001 20:08:58 -0700; I put a pair of 813's on 10 meters once and they worked nicely in AB1 config. 3350 volts on the plate and drove them with a Swan 500CX. The plates turned red and then a little orange with more drive,; /archives//html/Amps/2001-09/msg00448.html (9,254 bytes)
4. [AMPS] Thanks for 2x 813 info (score: 1): Author: gclute@home.com (Geo Clute W7LFD); Date: Fri, 28 Sep 2001 16:33:52 -0700; This is a multi-part message in MIME format. --=_NextPart_000_0001_01C1483B.5BF2E580 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Ron, are you still planning on buil; /archives//html/Amps/2001-09/msg00489.html (9,632 bytes)
5. [AMPS] Gound fault (score: 1): Author: Geo. W7LFD" <gclute@home.com (Geo. W7LFD); Date: Thu, 9 Aug 2001 14:03:49 -0700; I've used my Astron 35m to power my Icom 745, and I tried to use the same 12VDC source to power the relay in my Drake L4 B amplifier. A dead short through the Icom is the result. What is the best way; /archives//html/Amps/2001-08/msg00114.html (7,825 bytes)
6. [AMPS] Re: [Drake] L4B power output (score: 1): Author: Geo. W7LFD" <gclute@home.com (Geo. W7LFD); Date: Wed, 22 Aug 2001 09:17:49 -0700; I have my L4B configured for 220V input using an 8 foot length of solid copper to the circuit break mains. On 75 Meters to a well matched inverted "V" I see about 1 KW on the L4B meter. Drive power; /archives//html/Amps/2001-08/msg00289.html (7,618 bytes)
7. [AMPS] Amps, distortion, etc. (score: 1): Author: Geo. W7LFD" <gclute@home.com (Geo. W7LFD); Date: Fri, 24 Aug 2001 21:19:39 -0700; Johnson made a Viking Thunderbolt 6N2 amplifier with a pair of 4CX250's. It had 2100VDC plate xformer and had regulated screens and bias. The power supply was good to run 1kw DC input. Great sounding; /archives//html/Amps/2001-08/msg00319.html (8,923 bytes)
8. [AMPS] WTB: Ameritron AL-80A? (score: 1): Author: Geo. W7LFD" <gclute@home.com (Geo. W7LFD); Date: Tue, 28 Aug 2001 09:05:17 -0700; You may have 220 there now. How many wall receptacles do you have in the room? Sometimes they are wired with two separate circuits and between the two is 220v. But then, Mom probably knows best. Geo; /archives//html/Amps/2001-08/msg00350.html (8,091 bytes)
9. [AMPS] BEWARE OF PARTS BOUGHT FROM VE7BML - VE7BML - VE7BML (score: 1): Author: gclute@home.com (Geo); Date: Sat, 28 Jul 2001 12:58:28 -0700; This is a multi-part message in MIME format. --=_NextPart_000_000E_01C11764.FF0D1360 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Having been a claims ma; /archives//html/Amps/2001-07/msg00345.html (20,582 bytes)
10. [AMPS] BEWARE OF PARTS BOUGHT FROM VE7BML - VE7BML - VE7BML (score: 1): Author: gclute@home.com (Geo); Date: Sat, 28 Jul 2001 12:58:28 -0700; This is a multi-part message in MIME format. --=_NextPart_000_000E_01C11764.FF0D1360 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Having been a claims ma; /archives//html/Amps/2001-07/msg00346.html (20,631 bytes)
11. [AMPS] Disconnected? (score: 1): Author: gclute@home.com (George L. Clute); Date: Fri, 1 Jun 2001 21:46:48 -0700; Quiet or server down? Geo W7LFD -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting; /archives//html/Amps/2001-06/msg00003.html (6,410 bytes)
12. [AMPS] Review of Antenna Tuner from Dayton (score: 1): Author: gclute@home.com (George L. Clute); Date: Tue, 19 Jun 2001 15:56:16 -0700; When I was quite young and had very little money to spend on RF radio parts, I would paint my amplifier plate capacitor with TV Corona Dope used to suppress arcs in TV's. Worked great and I was able; /archives//html/Amps/2001-06/msg00166.html (13,524 bytes)
13. [AMPS] information (score: 1): Author: gclute@home.com (George L. Clute); Date: Sat, 5 May 2001 11:31:28 -0700; This is a multi-part message in MIME format. --=_NextPart_000_0009_01C0D556.ECD28FE0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 8bit <Snip> Lead by Example Carl. I fi; /archives//html/Amps/2001-05/msg00061.html (15,714 bytes)
14. [AMPS] UPDATE ON 3-1000Z OSCILLATION (score: 1): Author: gclute@home.com (Geo. Clute); Date: Fri, 11 May 2001 10:33:46 -0700; I'm beginning to understand about this expert business. I need to obtain a degree in RF engineering and pass my Washington State P.E. to become an amateur capable of following an amplifier receipe an; /archives//html/Amps/2001-05/msg00185.html (9,047 bytes)
15. [AMPS] Nichrome wire and tube chimneys! (score: 1): Author: gclute@home.com (Geo. Clute); Date: Sat, 12 May 2001 22:22:56 -0700; I ran a Eimac 4-1000A G-G with 6750 on the plate with a squirl cage blowing the bottom and a muffin fan blowing across the top seal and heat sink. No Chimney!...But then those were the days you could; /archives//html/Amps/2001-05/msg00232.html (10,155 bytes)
16. [AMPS] Blower Noise (score: 1): Author: gclute@home.com (Geo. Clute); Date: Mon, 14 May 2001 10:06:23 -0700; Dual cage kitchen hood exhaust fans would certainly provide more than enough air...most of them are dual speed, but then who could tolerate the noise? I suppose you could run them outdoors and pipe i; /archives//html/Amps/2001-05/msg00265.html (6,974 bytes)
17. [AMPS] KNOCK IT OFF! (score: 1): Author: gclute@home.com (Geo. Clute); Date: Thu, 24 May 2001 20:20:05 -0700; Parasitic Oscillations can occur anywhere, any time, especially when the plate voltage rises to significant levels and then the insanity and illogical occurrences increase with frequent displays of f; /archives//html/Amps/2001-05/msg00418.html (7,301 bytes)
18. [AMPS] 4CX350A (score: 1): Author: gclute@home.com (George L. Clute); Date: Sat, 21 Apr 2001 22:33:26 -0700; Would it be practical to put (3) 4CX350A's in parallel, or would the plate capacitance be too great to resonate on 75 thru 6 meters. Has anyone out there accomplished this feat? George Clute - W7LFD; /archives//html/Amps/2001-04/msg00461.html (8,116 bytes)
19. [AMPS] 4CX350A (score: 1): Author: gclute@home.com (George L. Clute); Date: Mon, 23 Apr 2001 09:13:10 -0700; I should have qualified my question...i.e. running a typical operation of 2000 to 2500 DC plate voltage under 250 Mhz in Class AB1 configuration. Has anyone constructed three 4CX350A's or 4CX300A's i; /archives//html/Amps/2001-04/msg00496.html (8,805 bytes)
20. [AMPS] 4CX350A (score: 1): Author: gclute@home.com (George L. Clute); Date: Mon, 23 Apr 2001 11:25:42 -0700; Some rather sage advice was provided me about building a three holer with 4CX350A's and I'm convinced that a single Triode in grounded grid would be a much better solution. Having the tubes and the s; /archives//html/Amps/2001-04/msg00502.html (7,691 bytes)

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