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Total 92 documents matching your query.

21. Re: [Amps] tube fils..again (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Sat, 16 Jun 2012 09:46:01 -0700 (PDT)
** Not insurmountable. A dpdt relay driven by some kind of flipflop could do that. - Jerry _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesti
/archives//html/Amps/2012-06/msg00208.html (7,062 bytes)

22. Re: [Amps] filament instant heating query / simple remedy (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Sun, 17 Jun 2012 09:39:25 -0700 (PDT)
** Nowadays, a PIC and associated circuitry might be cheaper than a resistor and a relay. Amazing times we live in. And yeah, it does get to the point where you're just playing with technology. But
/archives//html/Amps/2012-06/msg00224.html (9,523 bytes)

23. [Amps] New linear (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Mon, 18 Jun 2012 11:10:54 -0700 (PDT)
Hi Guys, I have come to an agreement to buy an Alpha 78 from a local ( 1.25 hour drive ) guy. Will probably drive out there to pick it up today. - Jerry Kaidor _______________________________________
/archives//html/Amps/2012-06/msg00241.html (6,734 bytes)

24. [Amps] New linear Alpha 78 (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Mon, 18 Jun 2012 17:39:17 -0700 (PDT)
Back from the Frigid North ( about 1 hour north of the QTH ), I have the Alpha 78 in hand. Works fine. We had a moment of panic when the seller powered it up with the top cover off. Flash went the HV
/archives//html/Amps/2012-06/msg00253.html (10,324 bytes)

25. Re: [Amps] New linear Alpha 78 (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Mon, 18 Jun 2012 18:29:53 -0700 (PDT)
One more initial impression. * I shall definitely need to hook up the ALC. This amp is extremely sensitive. - Jerry _______________________________________________ Amps mailing list Amps@contesting.c
/archives//html/Amps/2012-06/msg00256.html (8,404 bytes)

26. Re: [Amps] filament instant heating query / simple remedy (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Sun, 17 Jun 2012 10:12:08 -0700 (PDT)
** Trouble with that is - line voltage varies. Now, if there was a sensor to have the mini-motor stop at the right voltage, I think it would work. - Jerry Kaidor ____________________________________
/archives//html/Amps/2012-06/msg00260.html (8,706 bytes)

27. Re: [Amps] New linear Alpha 78 (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Mon, 18 Jun 2012 22:22:52 -0700 (PDT)
** OK, it's not that sensitive. I just had the wrong antenna installed. There is a little problem though. No backlights. Didn't notice till it got dark. - Jerry _____________________________________
/archives//html/Amps/2012-06/msg00263.html (9,045 bytes)

28. Re: [Amps] New linear Alpha 78 (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Tue, 19 Jun 2012 07:32:33 -0700 (PDT)
** It's morning. I UNPLUGGED THE RIG and popped open the cover. Wow it's pretty in there! Almost military. Anyway, at least one of the "green" bulbs is OK. I couldn't get the other one out. They're
/archives//html/Amps/2012-06/msg00270.html (9,589 bytes)

29. Re: [Amps] filament instant heating query / simple remedy (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Tue, 19 Jun 2012 07:36:42 -0700 (PDT)
** I'll bite. One to hook up the prop pitch motor.... - Jerry Kaidor _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinf
/archives//html/Amps/2012-06/msg00271.html (9,190 bytes)

30. [Amps] Misc Alpha thoughts (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Wed, 20 Jun 2012 10:27:49 -0700 (PDT)
Hi Guys, Just had my first QSO with the '78. There was a special event station calling CQ. I answered him barefoot, he didn't get my call. Then I pressed the "SSB" button on the Alpha and called him
/archives//html/Amps/2012-06/msg00291.html (10,065 bytes)

31. Re: [Amps] Use of 12V/115V inverter to power small tube amp? (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Wed, 20 Jun 2012 17:44:02 -0700 (PDT)
** Unless you have a linear that lets you run the filaments direct off the car battery. I have a couple of SBE SB2-LA's that have that feature. I would imagine that the Heathkit HA-14 "Kompact Kilow
/archives//html/Amps/2012-06/msg00310.html (8,585 bytes)

32. [Amps] Tube Theory? (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Wed, 20 Jun 2012 21:49:56 -0700 (PDT)
Hello, Anybody know a good book to get on tube theory? I'd just like the basics on how to go from a set of specs and curves to a design. I used to know this stuff but that was a LONG time ago. We rec
/archives//html/Amps/2012-06/msg00317.html (7,216 bytes)

33. Re: [Amps] Alpha sez run it on 220 (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Thu, 21 Jun 2012 07:23:30 -0700 (PDT)
** That's a big "Just". I figured out the SSB/Hi part myself. Low/CW is just too hard on the grids. This is a brand new stucco house. I will have a hard time convincing the XYL ( and indeed, myself
/archives//html/Amps/2012-06/msg00325.html (8,835 bytes)

34. [Amps] Acoustic Noise Comparison (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Thu, 21 Jun 2012 10:12:51 -0700 (PDT)
Hello, Still playing with my "new" Alpha 78. I had noticed that the fan was a bit loud for my taste, and thought I'd put a measurement on it. So I dug out my old Radio Shack sound meter and measured.
/archives//html/Amps/2012-06/msg00340.html (7,280 bytes)

35. Re: [Amps] Alpha sez run it on 220 (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Thu, 21 Jun 2012 11:40:51 -0700 (PDT)
** I would not dream of doing work of this nature without pulling a permit. I already have a couple of permitted jobs I need to finish - installing an air conditioner and some wiring in the kitchen.
/archives//html/Amps/2012-06/msg00345.html (7,918 bytes)

36. [Amps] Happy 30L-1 (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Thu, 21 Jun 2012 11:48:46 -0700 (PDT)
Hello, Per Carl KM1H's instructions, I replaced the old, cracked, high-R resistors in the parasitic suppressors in my 30L-1 this morning. Installed new ceramic 47-ohm units from Mouser. Worked *perfe
/archives//html/Amps/2012-06/msg00346.html (6,839 bytes)

37. Re: [Amps] Tube Theory? (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Thu, 21 Jun 2012 13:38:18 -0700 (PDT)
** There are some gullible audiophiles out there. About 15 years ago, I was visiting my audiophile friend Bob. He had some magazines. The magazines had ads for things like speaker cables with water
/archives//html/Amps/2012-06/msg00354.html (9,362 bytes)

38. Re: [Amps] Acoustic Noise Comparison (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Thu, 21 Jun 2012 15:12:08 -0700 (PDT)
** I do have some "Dynamat" left over from a car project. I might try a few pieces of that stuck to the top & sides - in places where there's nothing for it to short out if it comes loose - which do
/archives//html/Amps/2012-06/msg00357.html (8,482 bytes)

39. Re: [Amps] Acoustic Noise Comparison (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Thu, 21 Jun 2012 15:33:59 -0700 (PDT)
** Forget I mentioned welding. Riveting is clearly the way to go. Flush head aircraft rivets, countersink the top a little deep so they sink below the surface, then dab of bondo - poof, no rivet hea
/archives//html/Amps/2012-06/msg00358.html (8,222 bytes)

40. Re: [Amps] Acoustic Noise Comparison (score: 1)
Author: "Jerry Kaidor" <jerry@tr2.com>
Date: Thu, 21 Jun 2012 19:18:38 -0700 (PDT)
** Yeah, I would just rivet, like I said. Got all the stuff in the garage - bucking bars, pneumatic rivet gun, squeezer, umpteen rivets, rivet cutter etc etc. - Jerry _______________________________
/archives//html/Amps/2012-06/msg00361.html (8,529 bytes)

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