Search String: Display: Description: Sort:

Results:

References: [ +from:ajamas.rn@gmail.com: 19 ]

Total 19 documents matching your query.

1. [Amps] Herc 2 (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Tue, 28 Jan 2020 12:30:10 -0500
Hi GAry, If there is no difference in power output or antenna. I suggest: Tune around with a general coverage RX to see if Herc 2 is generating stuff it shouldn't. SDR with a broadband display makes
/archives//html/Amps/2020-01/msg00037.html (7,747 bytes)

2. [Amps] Matchbox and relay (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Tue, 21 Apr 2020 15:34:57 -0400
5000 ohm DC relay per the manual. http://bama.edebris.com/manuals/johnson/matchbox/ _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/m
/archives//html/Amps/2020-04/msg00012.html (6,559 bytes)

3. [Amps] Water cooling. Not dummy load. (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Thu, 25 Feb 2021 11:20:01 -0500
Anyone using the water cooled version of 3cx1500A7. 3CW1750A7 How'd you do it? 73, -Bob ah7i -- -do not look into LASER with remaining eye! _______________________________________________ Amps mailin
/archives//html/Amps/2021-02/msg00040.html (7,116 bytes)

4. Re: [Amps] Water cooling. Not dummy load. (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Thu, 25 Feb 2021 12:21:22 -0500
Sorry. 3cw1750a7 is a water version of 3cx1200a7, not 1500. -- -do not look into LASER with remaining eye! _______________________________________________ Amps mailing list Amps@contesting.com http:/
/archives//html/Amps/2021-02/msg00042.html (7,137 bytes)

5. Re: [Amps] PIN diode discussion (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Tue, 16 Mar 2021 12:27:09 -0400
Duck Duck found a thesis from 1990. I learned a bit about minority carriers. https://preserve.lib.lehigh.edu/islandora/object/preserve%3Abp-13964027 The author measures a 1N4007 and describes a metho
/archives//html/Amps/2021-03/msg00018.html (11,580 bytes)

6. Re: [Amps] Amps Digest, Vol 220, Issue 21 (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Wed, 21 Apr 2021 16:36:31 -0400
Aloha Bill, For single phase, look at flux. If you excite the winding on one leg of the core, the flux passes through all three legs. Core saturation will reduce the kVA rating to very roughly, 1/3 o
/archives//html/Amps/2021-04/msg00092.html (7,765 bytes)

7. [Amps] Ground and Neutral (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Thu, 6 May 2021 10:59:40 -0400
There's no need for a house wiring neutral in a 115/230 V amplifier running on 230V. That's how my homebrew 6 m amp is coming along. 115V Blower is on one of the HV transformer 115V primaries. The 11
/archives//html/Amps/2021-05/msg00031.html (6,989 bytes)

8. [Amps] 300 Hz sidebands (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Mon, 24 May 2021 10:33:53 -0400
Aloha Conrad! -50 dBc is 1/100,000. 10 mW for a 1 kW carrier. Have you measured ripple? 73, -Bob ah7i _______________________________________________ Amps mailing list Amps@contesting.com http://list
/archives//html/Amps/2021-05/msg00052.html (6,427 bytes)

9. Re: [Amps] Amps Digest, Vol 224, Issue 1 (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Thu, 5 Aug 2021 09:18:54 -0400
Don, Measure the voltage drops through the filament circuit. You'll quickly locate the problem. 73, -bob ah7i _______________________________________________ Amps mailing list Amps@contesting.com ht
/archives//html/Amps/2021-08/msg00016.html (6,927 bytes)

10. Re: [Amps] Testing Tubes with a Henry 2K (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Sun, 22 Aug 2021 14:55:00 -0400
Mike! My 1960's 2K, original owner K2GL, also has heaters in parallel. 73, -bob ah7i -- -do not look into LASER with remaining eye! _______________________________________________ Amps mailing list A
/archives//html/Amps/2021-08/msg00070.html (8,035 bytes)

11. Re: [Amps] Need Smarter Than I Am Help. (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Mon, 11 Oct 2021 12:54:06 -0400
Is IMD higher at higher plate voltage? From the 73 Eimac data sheet, for AB2, it's worse at 2.5kV than at 1.5 or 3.5. Then there's context. CW? For an amp originally designed for 1kW/2kW CW/SSB input
/archives//html/Amps/2021-10/msg00035.html (9,843 bytes)

12. Re: [Amps] MLA-2500 Tube Conversion (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Fri, 22 Oct 2021 13:41:35 -0400
I have a mla2500. No tubes. No tank. No bandswitch. Needs filter caps. Also have some gi7bt. I made mounts for two tubes. Unless a bargain multiband tank turns up, it's going on 6 or 40. The mla2500
/archives//html/Amps/2021-10/msg00080.html (8,788 bytes)

13. Re: [Amps] MLA-2500 Tube Conversion (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Fri, 22 Oct 2021 13:44:38 -0400
$1000 - $1200.... _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2021-10/msg00081.html (8,848 bytes)

14. [Amps] WE tubes (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Wed, 23 Mar 2022 16:24:20 -0400
There's a video of them assembling 300Bs. Where the parts, grid wire, filament wire, glass glass globes, plate material, micas, through glass transition, ... come from is not shown. I seriously doub
/archives//html/Amps/2022-03/msg00060.html (7,803 bytes)

15. [Amps] High Voltage Switching Supply (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Fri, 1 Mar 2024 19:14:15 -0500
I have a Panasonic oven switcher on the project shelf. Have not had a chance to fire it up. General schema: https://fccid.io/ACLAP4T01/Schematics/Inverter-Power-Supply-Schematic-77643 Oven was labele
/archives//html/Amps/2024-03/msg00001.html (6,840 bytes)

16. [Amps] High Voltage Switching Supply (Bob D.) (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Sat, 2 Mar 2024 19:02:26 -0500
Google brought a couple of youtube videos: 1. Three wire control signal requirements for the Panasonic Inverter module. 2. A hacked enclosure and control. Links: 1. https://www.youtube.com/watch?v=Vc
/archives//html/Amps/2024-03/msg00004.html (7,048 bytes)

17. Re: [Amps] High Voltage Switching Supply (Bob D.) (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Tue, 5 Mar 2024 07:22:11 -0500
OM Pete & amps, Someone posted a question about switching supplies for amps. One of the replies mentioned microwave oven supplies without much information. I have one of these supplies and am looking
/archives//html/Amps/2024-03/msg00011.html (9,038 bytes)

18. Re: [Amps] High Voltage Switching Supply (Bob D.) (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Tue, 5 Mar 2024 10:09:42 -0500
Hi Steve, "Well, there's no free lunch... Although these inverters present an interesting idea, this particular one uses a flyback transformer to generate the HV, which is unregulated and so varies b
/archives//html/Amps/2024-03/msg00012.html (9,485 bytes)

19. [Amps] b%w inear (score: 1)
Author: "Bob D." <ajamas.rn@gmail.com>
Date: Sun, 21 Jul 2024 01:56:13 -0400
Hi Paul, I suspect he could get close to $300 from someone who has not had the experience of making one of these old amps useable with a modern transceiver. A pair of 813 makes a realistic 600W outpu
/archives//html/Amps/2024-07/msg00007.html (6,644 bytes)

Current List: 1 - 19
Page: [1]
This search system is powered by Namazu