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21. [AMPS] Re: RF choke for SB-1000 (score: 1): Author: jmellis@ihug.co.nz (Martin Ellis); Date: Mon, 16 Feb 1998 11:56:07 +1300; Hello Vic, I also have a SB1000 which I built from the kit. Soon after I built it (around 1990) I became aware that Heatkit was offering a replacement RF choke. I gave them a copy of my proof of purc; /archives//html/Amps/1998-02/msg00098.html (7,906 bytes)
22. [AMPS] Re: Push-pull 6M amplifier? (score: 1): Author: jmellis@ihug.co.nz (Martin Ellis); Date: Thu, 22 Jan 1998 10:32:57 +1300; This does not sound like a good idea. When linear design went to single ended finals with pi-coupled output, the main reason was improved harmonic suppression, and coupling to coax feedlines. I have; /archives//html/Amps/1998-01/msg00074.html (7,338 bytes)
23. [AMPS] TL922 and burned grid choke (score: 1): Author: jmellis@ihug.co.nz (Martin Ellis); Date: Wed, 03 Dec 1997 12:44:29 +1300; Good morning, Here are details of repairs I found necessary when one 3-500Z had a grid-filament short in my TL922: Destroyed components: L7 470uH grid RF choke R22 4.7K grid resistor D1 diode 1N4007; /archives//html/Amps/1997-12/msg00043.html (7,476 bytes)
24. [AMPS] Re:Need HV insulators/feedthru (score: 1): Author: jmellis@ihug.co.nz (Martin Ellis); Date: Tue, 09 Dec 1997 16:55:10 +1300; What do you think of this suggestion for the HV lead between the RF deck and external supply: * Use a long enough HV cable from the feed point at the base of the RFC, and bring it through a grommet; /archives//html/Amps/1997-12/msg00170.html (8,624 bytes)
25. [AMPS] Re:smoked TL922 (score: 1): Author: jmellis@ihug.co.nz (Martin Ellis); Date: Tue, 09 Dec 1997 17:18:58 +1300; Good morning, I am interested in the failure mode of the bias diode D1, because this componect failed when my TL922 went *bang* with a new pair of Eimac 3-500z (unused but 10 years old). In my case t; /archives//html/Amps/1997-12/msg00172.html (9,216 bytes)
26. [AMPS] 3-500z tubes (score: 1): Author: jmellis@ihug.co.nz (Martin Ellis); Date: Mon, 10 Nov 1997 22:13:12 +1300; Good morning, I would appreciate some advice on a pair of new Eimac 3-500z tubes which I tested recently and both have failed. One has an internal grid-filament short; the other has lost vacuum and e; /archives//html/Amps/1997-11/msg00120.html (7,138 bytes)
27. [AMPS] 6M Linear designs (score: 1): Author: jmellis@ihug.co.nz (Martin Ellis); Date: Wed, 12 Nov 1997 14:13:53 +1300; Good morning Carl, The best looking homebrew 6m linear I have seen was made by Jim WA7JCO in Phoenix AZ. He showed me >1.5kw keydown on 6m with an 8877. There was no parallel plate capacitor - instea; /archives//html/Amps/1997-11/msg00169.html (8,155 bytes)
28. [AMPS] Re:6M Linear designs (score: 1): Author: jmellis@ihug.co.nz (Martin Ellis); Date: Wed, 12 Nov 1997 16:13:20 +1300; Oops...Thanks Paul My only excuse is that it as about 5 years ago when I visited Jimhave a few more grey hairs since then Martin Tune L Cap --||--^^^^^^^^^-|-- output -- ( -- Load Cap Anode ( -- 8877; /archives//html/Amps/1997-11/msg00170.html (7,261 bytes)
29. [AMPS] TL922 repaired (long) (score: 1): Author: jmellis@ihug.co.nz (Martin Ellis); Date: Sun, 23 Nov 1997 22:49:45 +1300; Good morning to the group. I experienced a grid-filament short in my TL922 while testing a pair of unused 3-500Z tubes which I had kept in storage for several years. The reason for trying the unused; /archives//html/Amps/1997-11/msg00322.html (10,668 bytes)

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