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References: [ +from:rdarlington@gmail.com: 15 ]

Total 15 documents matching your query.

1. Re: [Amps] Greetings From A Future Amp Builder (score: 1)
Author: Bob Darlington <rdarlington@gmail.com>
Date: Fri, 3 Jun 2016 10:05:44 -0600
Joe, I'm new to this list and I believe this is my first post. I'm building a dual 3-500Z amp at the moment and expect I will have some questions. Running it at 3500 volts, +15 bias (adjustable via t
/archives//html/Amps/2016-06/msg00004.html (9,456 bytes)

2. Re: [Amps] blowing up CMOS (score: 1)
Author: Bob Darlington <rdarlington@gmail.com>
Date: Tue, 11 Apr 2017 17:00:58 -0600
This was something we saw at work in the early Cray days of computing and is taught in our electrical safety courses today. Even with some precautions taken, the movement of the human body sliding in
/archives//html/Amps/2017-04/msg00084.html (9,143 bytes)

3. Re: [Amps] Price per Watt Conversation (score: 1)
Author: Bob Darlington <rdarlington@gmail.com>
Date: Thu, 27 Apr 2017 14:35:51 -0600
Agreed! Proficiency testing on a representative sampling of modes should be on the test. J-mode satellite work. JT65 or similar dsp driven digital mode, phone. Can't get a computer to work with your
/archives//html/Amps/2017-04/msg00348.html (11,706 bytes)

4. [Amps] Henry 2K-3 amp restore (score: 1)
Author: Bob Darlington <rdarlington@gmail.com>
Date: Sun, 12 Nov 2017 21:24:37 -0700
Hi all, After a 3 year wait, I finally have my Henry 2K-3 at home from a seller out on the east coast. I have it up and running and producing lots of power as expected. Amazingly, the ancient 3-500Z
/archives//html/Amps/2017-11/msg00132.html (8,599 bytes)

5. Re: [Amps] Henry 2K-3 amp restore (score: 1)
Author: Bob Darlington <rdarlington@gmail.com>
Date: Mon, 13 Nov 2017 22:22:24 -0700
Just a quick follow up on the 2K-3 amp and a thank you to all that responded here on the list and directly to my inbox. I was able to get the voltage reading in agreement with my external HV probe by
/archives//html/Amps/2017-11/msg00146.html (8,877 bytes)

6. Re: [Amps] Henry 2K-3 amp restore (score: 1)
Author: Bob Darlington <rdarlington@gmail.com>
Date: Tue, 21 Nov 2017 09:32:16 -0700
Confirmed, the front panel does use Sylvania 1815 bulbs and the LED replacements from Amazon worked just fine. I replaced the little GE 330 bulb in the power switch with an LED equivalent as well. Tu
/archives//html/Amps/2017-11/msg00175.html (11,677 bytes)

7. Re: [Amps] Henry 2K-3 amp restore (score: 1)
Author: Bob Darlington <rdarlington@gmail.com>
Date: Tue, 21 Nov 2017 10:03:11 -0700
I did clean the contacts as part of the troubleshooting process and used an ohmmeter to make sure it was switching. Figured there was a chance I banged into it while working but don't think I did. Wh
/archives//html/Amps/2017-11/msg00177.html (12,350 bytes)

8. Re: [Amps] Coolant for liquid-cooled solid-state amp (score: 1)
Author: Bob Darlington <rdarlington@gmail.com>
Date: Tue, 8 Oct 2019 10:58:38 -0600
Jim, Plain ol' distilled water will remove heat a lot better than diluting it with glycol, however the chemistry may dictate using it. Deionized water is much more corrosive than distilled even if it
/archives//html/Amps/2019-10/msg00028.html (8,734 bytes)

9. Re: [Amps] Coolant for liquid-cooled solid-state amp (score: 1)
Author: Bob Darlington <rdarlington@gmail.com>
Date: Tue, 8 Oct 2019 12:52:54 -0600
Yep, regular car anti-freeze has corrosion inhibitors mixed in which might be desirable. If your loop is completely inert, you won't do better than ordinary water for heat transfer without going to e
/archives//html/Amps/2019-10/msg00030.html (8,562 bytes)

10. Re: [Amps] Looking for a good HF amp for sale (score: 1)
Author: Bob Darlington <rdarlington@gmail.com>
Date: Fri, 8 Jan 2021 10:27:27 -0700
For what operating mode? Is that 800W carrier on AM? for digital modes at full power? Or just voice peaks on sideband? And what part of the world is your friend in? I have an old Henry in top shape,
/archives//html/Amps/2021-01/msg00008.html (7,789 bytes)

11. Re: [Amps] Distilled water in a dummy load ? (score: 1)
Author: Bob Darlington <rdarlington@gmail.com>
Date: Tue, 23 Feb 2021 13:30:55 -0700
Guys, c'mon. Bird 8201. $200 used, 500W continuous forever, 5kW short term. Air cooled, oil (mineral) filled, parts available, QC connectors like on our Model 43 meters, 1.25:1 max out to 2.5GHz, and
/archives//html/Amps/2021-02/msg00034.html (11,045 bytes)

12. Re: [Amps] SB-220 Output Network (score: 1)
Author: Bob Darlington <rdarlington@gmail.com>
Date: Thu, 12 Aug 2021 16:44:19 -0600
http://www.n3xkb.com/henryinfo/ If it's NOT there, somebody please send it to me so I can get it there. I'm always on the lookout for missing information or new to fill in the gaps after NE7X let the
/archives//html/Amps/2021-08/msg00025.html (16,478 bytes)

13. Re: [Amps] Hole punches (score: 1)
Author: Bob Darlington <rdarlington@gmail.com>
Date: Tue, 12 Oct 2021 08:07:22 -0600
Punches are great things. I've learned to design and print custom plastic grommets to center larger punches on smaller holes to enlarge them without screwing up position. Things like capacitor shaft
/archives//html/Amps/2021-10/msg00055.html (9,041 bytes)

14. Re: [Amps] Gigavac GH1 (score: 1)
Author: Bob Darlington <rdarlington@gmail.com>
Date: Fri, 10 Dec 2021 11:52:28 -0700
They still sell them but no ham discount. I bought 3 for a project a couple years ago. GH-1, not GH1. This was the vendor with the best price I found at the time: https://mgs4u.com/product/gigavac-gh
/archives//html/Amps/2021-12/msg00071.html (7,417 bytes)

15. Re: [Amps] Schematic needed for Henry 8K Ultra amp (score: 1)
Author: Bob Darlington <rdarlington@gmail.com>
Date: Thu, 12 May 2022 12:43:43 -0600
http://www.n3xkb.com/henryinfo/mans/Henry_3K_8K_Ultra_man.pdf http://www.n3xkb.com/henryinfo in general. And to everyone else, if you have a manual for a Henry amp that I'm missing, please send me a
/archives//html/Amps/2022-05/msg00002.html (8,075 bytes)

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