- 21. Re: [Amps] 6146 AM Modulation (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Tue, 16 Sep 2014 10:24:23 -0700
- -- ORIGINAL MESSAGE --(may be snipped) REPLY: It's been a long time, but in the old days we modulated a 6146 screen 100%. The easy way to do this was to NOT use a separate screen supply, but rather s
- /archives//html/Amps/2014-09/msg00016.html (7,193 bytes)
- 22. Re: [Amps] HV Diodes (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Thu, 9 Oct 2014 22:51:13 -0700
- -- ORIGINAL MESSAGE --(may be snipped) REPLY: 1N5408's are OK, but for essentially the same price 6A10's have a much higher forward current and surge current rating. I use them for everything. Be sur
- /archives//html/Amps/2014-10/msg00032.html (7,782 bytes)
- 23. Re: [Amps] HV Diodes (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Fri, 10 Oct 2014 09:15:19 -0700
- IGINAL MESSAGE --(may be snipped) REPLY: A little more expensive but a good choice too. 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com http://lis
- /archives//html/Amps/2014-10/msg00035.html (7,985 bytes)
- 24. Re: [Amps] HV Diodes (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Sat, 11 Oct 2014 12:07:20 -0700
- -- ORIGINAL MESSAGE --(may be snipped) REPLY: Since the beginning of the semiconductor industry, diodes, and especially power diodes, have been a source of failure. Technically your arguments are cor
- /archives//html/Amps/2014-10/msg00051.html (8,358 bytes)
- 25. Re: [Amps] Solid State Amps (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Fri, 17 Oct 2014 16:25:37 -0700
- -- ORIGINAL MESSAGE --(may be snipped) REPLY: And that's only PEP for SSB and CW. Not RTTY or any constant carrier modes, which are about half that. Sigh. 73, Bill W6WRT _____________________________
- /archives//html/Amps/2014-10/msg00141.html (8,285 bytes)
- 26. Re: [Amps] Amperex 3-500s For Sale (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Fri, 17 Oct 2014 22:14:31 -0700
- -- ORIGINAL MESSAGE --(may be snipped) REPLY: I was told years ago that Amperex 3-500's have welded filament pins vs soldered. Is that correct? 73, Bill W6WRT ________________________________________
- /archives//html/Amps/2014-10/msg00155.html (7,326 bytes)
- 27. Re: [Amps] Amperex 3-500s For Sale (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Sat, 18 Oct 2014 12:35:08 -0700
- -- ORIGINAL MESSAGE --(may be snipped) REPLY: Yes, they do. Thanks. 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/ma
- /archives//html/Amps/2014-10/msg00172.html (7,232 bytes)
- 28. [Amps] Class E amps (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Sat, 18 Oct 2014 16:35:20 -0700
- -- ORIGINAL MESSAGE --(may be snipped) REPLY: Several years ago during a RTTY contest on 40 meters I noticed a weird hash noise covering the entire band. It would come and go with a timing like someo
- /archives//html/Amps/2014-10/msg00175.html (7,417 bytes)
- 29. Re: [Amps] Amps Digest, Vol 142, Issue 49 (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Sat, 25 Oct 2014 12:21:02 -0700
- -- ORIGINAL MESSAGE --(may be snipped) REPLY: Have you done any duty cycle testing? Brick-on-the-key style? 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@conte
- /archives//html/Amps/2014-10/msg00226.html (6,925 bytes)
- 30. Re: [Amps] AL1200 on AM - max carrier? (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Thu, 30 Oct 2014 17:31:58 -0700
- -- ORIGINAL MESSAGE --(may be snipped) REPLY: That is intentional. Government entities like to have a law or rule on the books that they can use only when they need or want to nail somebody. 99.99% o
- /archives//html/Amps/2014-10/msg00265.html (9,003 bytes)
- 31. [Amps] Power transistors for sale (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Fri, 31 Oct 2014 20:16:26 -0700
- For sale: Pair of BLF188XRS transistors manufactured by NXP, brand new, never used. Two of these will putout 1500+ watts. Requires 50 volt supply. These are the flangeless version, for direct attachm
- /archives//html/Amps/2014-10/msg00287.html (6,744 bytes)
- 32. [Amps] Holding a vacuum (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Wed, 26 Nov 2014 08:08:54 -0800
- I'm curious as to your experiences with tubes in long term storage. The question is, which type holds a vacuum better - glass or ceramic, or is there no difference? My own limited experience says cer
- /archives//html/Amps/2014-11/msg00054.html (7,002 bytes)
- 33. Re: [Amps] Holding a vacuum (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Mon, 1 Dec 2014 09:38:34 -0800
- -- ORIGINAL MESSAGE --(may be snipped) REPLY: Tubes that lose vacuum draw excess anode current even when idling and if they are glass, one can see a blue glow in between the elements when HV is appli
- /archives//html/Amps/2014-12/msg00002.html (6,782 bytes)
- 34. Re: [Amps] Linearization problem (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Thu, 4 Dec 2014 11:51:05 -0800
- Instead of driving the amp with RF, I would suggest doing it digitally. Some years ago I toured the KFI transmitter in La Mirada, California and saw their Harris DX-50. It is a 50 kW AM transmitter t
- /archives//html/Amps/2014-12/msg00030.html (7,837 bytes)
- 35. Re: [Amps] THE SKINNY ON MY AL-82 (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Fri, 19 Dec 2014 17:44:03 -0800
- -- ORIGINAL MESSAGE --(may be snipped) REPLY: So Mr Measures with his low Q nichrome wire was right? 73, Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.c
- /archives//html/Amps/2014-12/msg00071.html (7,640 bytes)
- 36. Re: [Amps] THE SKINNY ON MY AL-82 (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Sun, 21 Dec 2014 13:29:04 -0800
- I have a few nits to pick. Not true. The RF divides between the coil and resistor in a ratio depending on frequency. At low frequencies most of the RF flows through the coil, but even there a small a
- /archives//html/Amps/2014-12/msg00075.html (8,599 bytes)
- 37. Re: [Amps] What is a Tank Circuit? (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Tue, 13 Jan 2015 12:57:29 -0800
- -- ORIGINAL MESSAGE --(may be snipped) REPLY: Because it can store energy, at least momentarily. Simple as that. Don't overthink it. :-) Bill W6WRT _______________________________________________ Amp
- /archives//html/Amps/2015-01/msg00097.html (8,195 bytes)
- 38. Re: [Amps] Replacing meter bulbs in Command Tech HF-2500 (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Mon, 19 Jan 2015 13:54:09 -0800
- -- ORIGINAL MESSAGE --(may be snipped) REPLY: I have to agree on that. If you want a laugh (sort of) go read the review in QST from many years ago. The reviewer stated that this amp appeared to be ve
- /archives//html/Amps/2015-01/msg00149.html (7,596 bytes)
- 39. Re: [Amps] Multi-tube vs Single or Dual-tube amps? (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Mon, 19 Jan 2015 14:01:49 -0800
- -- ORIGINAL MESSAGE --(may be snipped) REPLY: Please explain how tank circuits become more complex with changes in load impedance. Bill W6WRT _______________________________________________ Amps mail
- /archives//html/Amps/2015-01/msg00154.html (8,493 bytes)
- 40. Re: [Amps] Multi-tube vs Single or Dual-tube amps? (score: 1)
- Author: Bill Turner <dezrat@outlook.com>
- Date: Mon, 19 Jan 2015 19:27:31 -0800
- -- ORIGINAL MESSAGE --(may be snipped) REPLY: That problem of excessive output capacitance was solved long ago. Consult any recent ARRL Handbook in the amplifiers section. Look for info about an L-ne
- /archives//html/Amps/2015-01/msg00169.html (8,990 bytes)
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