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Total 8 documents matching your query.

1. [AMPS] TS-2000 (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 3 Aug 2001 10:17:54 -0400; Hi Peter, I've measured solid state zero-bias transistor amps at about the same IMD level as the TS-2000. I wonder what they did wrong? It would be interesting to look at one on a three-tone test, an; /archives//html/Amps/2001-08/msg00030.html (11,685 bytes)
2. [AMPS] TS-2000 (score: 1): Author: paulc@mediaone.net (Paul Christensen); Date: Fri, 3 Aug 2001 13:28:02 -0400; W8JI: I suppose it depends on your definition of the perfect wave shape. If what you see is the same as my reference on p 15.6 of the 1998 ARRL Handbook, I would gladly trade my eye teeth for the wav; /archives//html/Amps/2001-08/msg00033.html (11,998 bytes)
3. [AMPS] TS-2000 (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 3 Aug 2001 14:48:20 -0400; Hi Paul, If the goal is to copy the signal as best as possible at the highest speed possible while not disturbing others, then the ARRL's waveform is certainly not ideal. It is the product of cheap c; /archives//html/Amps/2001-08/msg00035.html (13,136 bytes)
4. [AMPS] TS-2000 (score: 1): Author: paulc@mediaone.net (Paul Christensen); Date: Fri, 3 Aug 2001 17:14:58 -0400; I would agree with that and to simultaneously meet these two requirements, the sine rise - sine decay in ~ 2 mS time on each slope is probably a good starting point. The waveform that I referred to; /archives//html/Amps/2001-08/msg00036.html (13,093 bytes)
5. [AMPS] TS-2000 (score: 1): Author: na9d@speakeasy.net (Jon Ogden); Date: Fri, 03 Aug 2001 16:48:31 -0500; Gee, why bother. Isn't CW dead as a mode? :-) At least that's what I hear from the unwashed masses. 73, Jon NA9D -- Jon Ogden NA9D (ex: KE9NA) Member: ARRL, AMSAT, DXCC, NRA http://www.qsl.net/ke9na; /archives//html/Amps/2001-08/msg00037.html (8,448 bytes)
6. [AMPS] TS-2000 (score: 1): Author: Ian White, G3SEK" <g3sek@ifwtech.com (Ian White, G3SEK); Date: Fri, 3 Aug 2001 20:35:51 +0100; Model numbers? A similar problem used to happen with the old Yaesu FT-221. This was notorious for key-clicks, yet it showed a very reasonable keying waveform on a scope. It turned out to be the keyed; /archives//html/Amps/2001-08/msg00038.html (9,482 bytes)
7. [AMPS] TS-2000 (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 3 Aug 2001 19:53:43 -0400; Hi Paul, I don't understand what you mean by "bell like". Do you mean the shape or the sound? If you mean shape, that shape is not optimum for bandwidth. What you hear is entirely different anyway, u; /archives//html/Amps/2001-08/msg00041.html (12,976 bytes)
8. [AMPS] TS-2000 (score: 1): Author: paulc@mediaone.net (Paul Christensen); Date: Fri, 3 Aug 2001 21:35:53 -0400; The sound...not the wave shape. The exponential decay produces this effect and agreeably at the cost of added bandwidth. I use 1.8 kHz and 2.4 kHz filters most of the time and let my ear filter out; /archives//html/Amps/2001-08/msg00043.html (10,397 bytes)

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