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1. [Amps] Use of Regulated DC on Power Tubes Filaments (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Wed, 9 Oct 2002 11:24:00 EDT; <PRE>If DC was bad for tube filaments, why didn't all the R-392 receivers made for the military self-destruct? These receivers were designed to run off of 24 VDC for BOTH filaments and plates. 73 Tod; /archives//html/Amps/2002-10/msg00078.html (6,831 bytes)
2. [Amps] How light can you make a 500W amplifier? (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Tue, 15 Oct 2002 14:43:36 EDT; <PRE>In my opinion the future for lightweight SSB amplifiers would be a solid-state amplifier based on EER ( Envelope Elimination and Recovery) with a Switching Power Supply. An EER amplifier can use; /archives//html/Amps/2002-10/msg00147.html (9,940 bytes)
3. [Amps] Re: How light can you make a 500 w amp (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Wed, 16 Oct 2002 23:55:56 EDT; Hi Yee, and others in the AMPS list, thanks for the interest in Class-E and EER ( Envelope Elimination and Restoration). As best I understand it, EER is a method that allows using a Class-E non-linea; /archives//html/Amps/2002-10/msg00189.html (8,689 bytes)
4. [AMPS] Tuning roller inductor amps (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Wed, 12 Dec 2001 19:31:41 EST; Jim, to insure you are using the proper amount of inductance for each band first make sure you know what is recommended via one of the Handbooks. If you have an inductance meter you can preset the am; /archives//html/Amps/2001-12/msg00214.html (7,544 bytes)
5. [AMPS] Inductors (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Tue, 18 Dec 2001 04:17:10 EST; I think the most efficient variable inductor I have seen is one based on the "screwdriver" antenna. A coil is placed inside a copper tube of slightly larger diameter. At one end of the copper tube is; /archives//html/Amps/2001-12/msg00319.html (7,789 bytes)
6. [AMPS] HV Pole Pigs ++ (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Thu, 20 Dec 2001 02:52:18 EST; After the Chinese held our flyboys against their will on Hainon Island and stripping all the technology from the plane that they could, I would not do business with those creeps. The hottest video go; /archives//html/Amps/2001-12/msg00377.html (8,764 bytes)
7. Fwd: [AMPS] HV connectors (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Mon, 19 Nov 2001 20:56:34 EST; --part1_5b.1eeae6ff.292b1252_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit I had often thought that a safe way to run high voltage between two chassis would be; /archives//html/Amps/2001-11/msg00363.html (12,496 bytes)
8. [AMPS] CIRCUIT BREAKER FOR TRANSFORMER PRIMARY CIRCUIT (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Sun, 7 Oct 2001 12:52:48 EDT; Can anyone recommend a suitable panel-mount 2-pole circuit breaker for the 240V primary circuit of a high-voltage transformer power supply? There are so many different types of circuit breakers avail; /archives//html/Amps/2001-10/msg00142.html (7,926 bytes)
9. [AMPS] circuit breaker recommendation (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Tue, 9 Oct 2001 14:44:22 EDT; Thanks to all who responded to my inquiry about choosing a suitable circuit breaker for a transformer power supply primary circuit. I found an excellent guide on circuit breakers at : www.commercialc; /archives//html/Amps/2001-10/msg00242.html (6,876 bytes)
10. [AMPS] HV warning (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Thu, 11 Oct 2001 15:44:10 EDT; John , thanks for the reminders about the potential hazards of working around high voltage. Another rule of thumb I always follow : NEVER , EVER work around high voltage after you have had even ONE b; /archives//html/Amps/2001-10/msg00284.html (7,219 bytes)
11. [AMPS] Hand in the pocket? (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Sat, 13 Oct 2001 11:33:54 EDT; Carl, I think the main reason to keep one hand in a pocket while working around high voltage is to avoid an electrical path from both arms through the heart, as well as limiting the ways one can get; /archives//html/Amps/2001-10/msg00323.html (7,150 bytes)
12. [AMPS] MEASURING FILAMENT VOLTAGE (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Sun, 21 Oct 2001 20:41:22 EDT; I'm not sure if this has been brought up before, but wouldn't the best way to get a truly accurate reading of filament volts on a glass tube like a 4-1000 would be to solder small wires directly to t; /archives//html/Amps/2001-10/msg00414.html (7,959 bytes)
13. [AMPS] GLITCH RESISTORS - SOURCE (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Sat, 8 Sep 2001 23:05:52 EDT; Check out RCD resistors at www.rcd-comp.com. Go to their resistor page to HV listings - look up PCN SERIES. They have non-inductive solid-ceramic construction. Sizes 2W-5W wire leaded would be excell; /archives//html/Amps/2001-09/msg00150.html (7,302 bytes)
14. Fwd: [AMPS] Tuned input (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Fri, 13 Jul 2001 08:16:58 EDT; --part1_e.f83f519.288040ba_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Jim, I ran into a similar problem with a Dentron DTR-2000L linear amplifier. The DTR-2; /archives//html/Amps/2001-07/msg00160.html (10,438 bytes)
15. [AMPS] Why build high level AM? (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Fri, 13 Jul 2001 17:47:07 EDT; Several years ago I built a 200 watt all-solid-state Pulse Duration Modulation (PDM) AM transmitter using a pair of $5 switching Mosfets in the final Class-E amplifier and one in the class-S modulato; /archives//html/Amps/2001-07/msg00162.html (7,718 bytes)
16. [AMPS] Length of Anode Lead To Tuning Condenser in a Linear Amplifier? (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Sun, 22 Jul 2001 15:01:47 EDT; a GG Linear Amplifier it is good practice to keep the length of the lead as short as possible from the Anode of the tube to the Tuning Capacitor of the Pi-Net output circuit, and to mount the Tuning; /archives//html/Amps/2001-07/msg00274.html (8,413 bytes)
17. [AMPS] Inductively Coupled VHF Parasitic Suppressor? (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Tue, 24 Jul 2001 13:22:53 EDT; I would like to run this by the AMPS group. Has anyone ever experimented with a VHF parasitic suppressor like the ones used in large-cavity enclosure High-Power HF amplifiers where the size of the en; /archives//html/Amps/2001-07/msg00298.html (8,929 bytes)
18. Fwd: [AMPS] 50~ vs 60~ ??? (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Sat, 2 Jun 2001 01:17:28 EDT; --part1_55.165ef97f.2849d0e8_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Don't do it ! Unless the power transformer is rated for 50 Hz operation it will most; /archives//html/Amps/2001-06/msg00005.html (9,826 bytes)
19. [AMPS] Chip Capacitors for Filament ,Grid, or Screen Bypass? (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Wed, 6 Jun 2001 12:02:57 EDT; Has anyone used the newer ceramic chip capacitors for bypass applications in a Homebrew HFamplifier? I thought about using some in a G-G GS35b HF amplifier project for RF bypassing the cathode-filame; /archives//html/Amps/2001-06/msg00055.html (7,578 bytes)
20. Fwd: [AMPS] Review of Antenna Tuner from Dayton (score: 1): Author: ToddRoberts2001@aol.com (ToddRoberts2001@aol.com); Date: Tue, 19 Jun 2001 18:53:57 EDT; --part1_83.be7eacb.28613205_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit I sure enjoyed the review of the Palstar tuner, sounds like a nice one. Personally th; /archives//html/Amps/2001-06/msg00165.html (15,759 bytes)

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