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1. [AMPS] Long Wire Antennas (score: 1): Author: markeh@erols.com (Mark Hall); Date: Mon, 21 Jun 1999 19:15:09 -0400; I've had Awsomely poor luck with long wire antennas.. the need for a good ground conterpoise/earth ground, the arcin' and sparkin' behavior, shocks, burns, pssssssstttttts, RF in the shack, very peak; /archives//html/Amps/1999-06/msg00565.html (7,979 bytes)
2. [AMPS] A pair of 813's?? (score: 1): Author: markeh@erols.com (Mark Hall); Date: Wed, 23 Jun 1999 20:38:35 -0400; Gosh my first amp was a Pair of 813's.. Didn't get close to 1200 Watts out of them.. more like 600 on a great day.. '73 KI4Z -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@con; /archives//html/Amps/1999-06/msg00615.html (6,810 bytes)
3. [AMPS] Off Subject Oil Leakers (score: 1): Author: markeh@erols.com (Mark Hall); Date: Fri, 09 Apr 1999 17:08:00 -0400; I had a 66 corvair which leaked oil like a sieve. Good news is you'll never see rusted rear quarter panels on a corvair.. -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contes; /archives//html/Amps/1999-04/msg00196.html (6,817 bytes)
4. [AMPS] Got Juice? (score: 1): Author: markeh@erols.com (Mark Hall); Date: Fri, 16 Apr 1999 18:37:39 -0400; I just came across a monster HV XFMR.. (UTC Transformer "Type 308") weighs maybe 200 pounds (guessing), has 6 terminals on the input side arranged in two groups of three (Presumeably dual primaries c; /archives//html/Amps/1999-04/msg00315.html (6,953 bytes)
5. R: [AMPS] voltage drop (score: 1): Author: markeh@erols.com (Mark Hall); Date: Mon, 26 Apr 1999 06:55:08 -0400; I would get a HV probe, and look at the "DC/ripple" output with a scope. Likely a combination of all three factors contribute (Secondary resistance, line voltage drop, voltage doubler droop/capacitan; /archives//html/Amps/1999-04/msg00395.html (6,984 bytes)
6. [AMPS] ICE Filter Update (score: 1): Author: markeh@erols.com (Mark Hall); Date: Tue, 27 Apr 1999 15:55:36 -0400; I would think that ICE should batch test the Caps before unit assembly.. their reputation is on the line, besides their expense of return/repair. Collins and Johnson had the Quality issue in mind way; /archives//html/Amps/1999-04/msg00402.html (7,088 bytes)
7. [AMPS] Tubes for QRO (score: 1): Author: markeh@erols.com (Mark Hall); Date: Tue, 16 Mar 1999 08:15:12 -0500; Does anyone have an opinion on the Penta Labs PL-175 tube in a QRO HF amplifier? Mid to Late '60's I believe. For a while Eimac copied it as the 8295 with full military pomp and circumstance. Metal/G; /archives//html/Amps/1999-03/msg00339.html (8,975 bytes)
8. [AMPS] CW amplifier progress (well, daydream progress) -- long (score: 1): Author: markeh@erols.com (Mark Hall); Date: Tue, 16 Mar 1999 08:19:25 -0500; I would say the Ancient 4-1000A should not be ruled out.. Used with a tuned grid input and serious High Voltage, it's performance is hard to match. -- FAQ on WWW: http://www.contesting.com/ampfaq.htm; /archives//html/Amps/1999-03/msg00341.html (8,991 bytes)
9. [AMPS] HV Connectors (score: 1): Author: markeh@erols.com (Mark Hall); Date: Sat, 16 Jan 1999 09:01:08 -0500; Maybe it's not recommended, but I use silver plated double shielded RG-9 with SO-239/PL-259 connectors for inter unit HV. As long as it stays hooked up there is no safety problem. Inside the enclosur; /archives//html/Amps/1999-01/msg00204.html (8,337 bytes)
10. [AMPS] High Power Coax Switch (score: 1): Author: markeh@erols.com (Mark Hall); Date: Thu, 10 Dec 1998 11:04:38 -0500; Bird made a nifty 6 position coax switch using Type N connectors once up a time. The "Knob" was a pull, turn, Push ordeal. Looks real heavy duty, but I've heard a few second opinions on N connectors.; /archives//html/Amps/1998-12/msg00178.html (7,104 bytes)
11. [AMPS] "Technical Material" Amplifier (score: 1): Author: markeh@erols.com (Mark Hall); Date: Thu, 24 Dec 1998 09:17:44 -0500; Hello all: I just saw an Ad for a military Technical Material linear that uses a PL-172 or 8895 tube. Ad says 1KW output, continuous tune from 2 to 28 MHz, Key down all day on AM. 4' high rack mount.; /archives//html/Amps/1998-12/msg00356.html (7,710 bytes)
12. [AMPS] Technical Material 8295 Amp (score: 1): Author: markeh@erols.com (Mark Hall); Date: Fri, 25 Dec 1998 04:10:30 -0500; Well.. it looks like I bought it.. a little negotiation remains to be done.. and a drive to NYC.. any comments relative to a double 3-500Z Henry amp? Spare tubes are included, so the rare as hen's te; /archives//html/Amps/1998-12/msg00381.html (6,994 bytes)
13. [AMPS] 4-1000 Linear Schematic (score: 1): Author: markeh@erols.com (Mark Hall); Date: Thu, 04 Jun 1998 06:45:01 -0500; Hey anyone have any links to 4-1000 schematics? I'm looking for a swamped grid drive version with about 6.5KV on the plate. '73 KI4Z -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions:; /archives//html/Amps/1998-06/msg00046.html (6,649 bytes)
14. [AMPS] HV Transformer Secondary Resistance (score: 1): Author: markeh@erols.com (Mark Hall); Date: Wed, 17 Jun 1998 07:03:20 -0500; Hi: I just purchased a 3.3KV @ 1000 ma, 40 pound, "never got warm @800 ma", transformer off the web. I measured the secondary resistance with a Fluke 8024B DVM using several different ranges and in a; /archives//html/Amps/1998-06/msg00175.html (8,358 bytes)
15. [AMPS] HV Transformer Secondary Resistance (score: 1): Author: markeh@erols.com (Mark Hall); Date: Thu, 18 Jun 1998 07:00:22 -0500; Sending that 3.3KV @ 1 ampere, 110VAC primary with 175 ohm secondary transformer back. Anyone got an alternative/replacement that'll run a 4-1000 full bore? '73 KI4Z -- FAQ on WWW: http://www.contest; /archives//html/Amps/1998-06/msg00194.html (7,399 bytes)
16. [AMPS] HV Transformer Idea (score: 1): Author: markeh@erols.com (Mark Hall); Date: Sun, 21 Jun 1998 21:54:06 -0500; Hi: I'm an electrical engineer, but far away from knowing much about transformers. Don't laugh too hard if this is way out there. I have a 110 VAC primary 3.2KV @ one amp transformer. If I full wave; /archives//html/Amps/1998-06/msg00214.html (7,409 bytes)
17. [AMPS] a HV filter choke idea (score: 1): Author: markeh@erols.com (Mark Hall); Date: Sun, 21 Jun 1998 23:01:22 -0500; If you didn't laugh too hard at the previous idea.. here's another: I have a 500 Volt one ampere power transformer that is screaming "choke me". Now if I hook the secondary in series with the 3.2 KV; /archives//html/Amps/1998-06/msg00215.html (6,915 bytes)
18. [AMPS] ?? High VDC VOM (score: 1): Author: markeh@erols.com (Mark Hall); Date: Fri, 26 Jun 1998 17:17:03 -0500; I use one of those TV set high voltage probe voltage dividers that are about a 15" long with several insulator ribs to measure or scope out HV. '73 KI4Z -- FAQ on WWW: http://www.contesting.com/ampfa; /archives//html/Amps/1998-06/msg00236.html (7,342 bytes)
19. [AMPS] Class E MOSFET Amps (score: 1): Author: markeh@erols.com (Mark Hall); Date: Wed, 29 Apr 1998 06:31:58 -0500; Hi all: I'm new to this archive and have built a somewhat figity 4-1000 amplifier over the past couple years. Almost afraid to "fire" it up because the plate gets so bright red/orange. 4.5 KV scares; /archives//html/Amps/1998-04/msg00322.html (8,857 bytes)
20. [AMPS] Dollars per dB (score: 1): Author: markeh@erols.com (Mark Hall); Date: Tue, 06 Jan 1998 20:11:07 -0500; Hello Group.. I'm a Bang for the Buck guy.. and these are my views. Feel free to tromp me.. but realize that I won't change my mind easily. Money cures a multitude of DB loss.. that's a fact. Without; /archives//html/Amps/1998-01/msg00141.html (14,568 bytes)

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