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1. [Amps] S/S Amp's (score: 1): Author: "David Shapiro" <info@transmittersrus.com>; Date: Thu, 12 Sep 2013 17:03:46 +0100; It's already in production. Not quite what you're after but... <http://www.k7dyy.com/> http://www.k7dyy.com/ David G4ZOW _______________________________________________ Amps mailing list Amps@contest; /archives//html/Amps/2013-09/msg00079.html (6,995 bytes)
2. Re: [Amps] S/S Amp's (score: 1): Author: "qrv@kd4e.com" <qrv@kd4e.com>; Date: Thu, 12 Sep 2013 12:14:40 -0400; Why are Hams still rf-spamming 160 & 80m with AM carriers when a DSB suppressed-carrier signal is just as good, uses less power, and may be sync-detected to remove flutter, etc? I know, I know, ... n; /archives//html/Amps/2013-09/msg00080.html (7,879 bytes)
3. Re: [Amps] S/S Amp's (score: 1): Author: "Fuqua, Bill L" <wlfuqu00@uky.edu>; Date: Thu, 12 Sep 2013 17:14:42 +0000; Synchronous detection requires either a carrier, can be reduced in amplitude, to lock on or a somewhat complex quadrature phase detection system to lock the BFO by maintaining an in-phase relationshi; /archives//html/Amps/2013-09/msg00083.html (8,632 bytes)
4. Re: [Amps] S/S Amp's (score: 1): Author: "Joe Subich, W4TV" <lists@subich.com>; Date: Thu, 12 Sep 2013 14:29:42 -0400; For the same reason they spam other bands with ESSB, IM products, keyclicks, splatter and/or full carrier AM - because they can and the rules against stupidity, and bad operating practices either do; /archives//html/Amps/2013-09/msg00084.html (8,251 bytes)
5. Re: [Amps] S/S Amp's (score: 1): Author: "qrv@kd4e.com" <qrv@kd4e.com>; Date: Thu, 12 Sep 2013 14:51:03 -0400; That's why "reduced carrier" versus "eliminated carrier". Synchronous detection requires either a carrier, can be reduced in amplitude, to lock on or a somewhat complex quadrature phase detection sys; /archives//html/Amps/2013-09/msg00085.html (7,973 bytes)
6. Re: [Amps] S/S Amp's (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Thu, 12 Sep 2013 16:06:01 -0400; Most spatter and poor IMD is strictly from the slopbucket operators that either dont care or havent a clue to operate. The majority of AM these days is clean as new users make the necessary audio mod; /archives//html/Amps/2013-09/msg00088.html (9,910 bytes)
7. Re: [Amps] S/S Amp's (score: 1): Author: "Fuqua, Bill L" <wlfuqu00@uky.edu>; Date: Thu, 12 Sep 2013 20:14:27 +0000; Most hams today can't tune SSB clearly. AM always sounds right. Perhaps we should have SSB reduced carrier rather than suppressed carrier. Another point, DSB occupies same bandwidth as AM. You could; /archives//html/Amps/2013-09/msg00089.html (9,543 bytes)
8. Re: [Amps] S/S Amp's (score: 1): Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>; Date: Thu, 12 Sep 2013 20:14:54 -0400; There are many valid reasons for that. We tune to make the audio sound normal. For me, if a station adjusts their audio to add 200 Hz on the low side, I will tune almost exactly 200 Hz high. Two time; /archives//html/Amps/2013-09/msg00096.html (11,066 bytes)
9. Re: [Amps] S/S Amp's (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Thu, 12 Sep 2013 21:49:44 -0400; By using the Exalted AM method that goes back 70 years you dont need a fancy radio. Modify the BFO for variable injection level and connect to the last IF thereby maintaining AGC. Its almost as good; /archives//html/Amps/2013-09/msg00097.html (11,025 bytes)
10. Re: [Amps] S/S Amp's (score: 1): Author: k7fm <k7fm@teleport.com>; Date: Thu, 12 Sep 2013 21:32:44 -0700; Modify the BFO for variable injection level and connect to the last IF thereby maintaining AGC. Its almost as good as a sync detector for selective fading and its easier to follow a slightly drifting; /archives//html/Amps/2013-09/msg00100.html (8,486 bytes)
11. Re: [Amps] S/S Amp's (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Thu, 12 Sep 2013 22:58:39 -0700; By using the Exalted AM method that goes back 70 years you dont need a fancy radio. Modify the BFO for variable injection level and connect to the last IF thereby maintaining AGC. Its almost as good; /archives//html/Amps/2013-09/msg00101.html (10,188 bytes)
12. Re: [Amps] S/S Amp's (score: 1): Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>; Date: Fri, 13 Sep 2013 02:12:17 -0400; Modify the BFO for variable injection level and connect to the last IF thereby maintaining AGC. Its almost as good as a sync detector for selective fading and its easier to follow a slightly drifting; /archives//html/Amps/2013-09/msg00102.html (9,307 bytes)
13. Re: [Amps] S/S Amp's (score: 1): Author: peter chadwick <g8on@fsmail.net>; Date: Fri, 13 Sep 2013 09:34:22 +0200; <A cathode follower can solve the problem, though.> A cathode follower can solve many problems. Some years ago, one afternoon I had the tower cranked over and the garden full of bits of aluminium as; /archives//html/Amps/2013-09/msg00104.html (8,405 bytes)
14. Re: [Amps] S/S Amp's (score: 1): Author: Bill Turner <dezrat1242@yahoo.com>; Date: Fri, 13 Sep 2013 06:36:04 -0700; ORIGINAL MESSAGE: (may be snipped) REPLY: Not a bad price either: $1400 + $30 shipping. A rather specialized item, but somebody will want one. 73, Bill W6WRT _________________________________________; /archives//html/Amps/2013-09/msg00113.html (8,200 bytes)
15. Re: [Amps] S/S Amp's (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Fri, 13 Sep 2013 10:07:06 -0400; I'll have to remember that one Peter, I still get bothered by them and other pests. Carl KM1H <A cathode follower can solve the problem, though.> A cathode follower can solve many problems. Some year; /archives//html/Amps/2013-09/msg00114.html (9,606 bytes)
16. Re: [Amps] S/S Amp's (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Fri, 13 Sep 2013 10:27:09 -0400; The huge majority of AMers these days keep the BW to between 6-9KHz and with very low distortion the adjacent channel is quiet. I run the TS-950SD at 3200Hz per SB on both modes and the vintage gear; /archives//html/Amps/2013-09/msg00115.html (13,238 bytes)
17. Re: [Amps] S/S Amp's (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Fri, 13 Sep 2013 10:27:24 -0400; No pain, no gain. Thats also why you have 2 hands (-; Ive zener regulated the BFO and last IF in my SX-17 as well as the HFO and added a TC cap to that stage. Stability is more than tolerable. The ne; /archives//html/Amps/2013-09/msg00116.html (10,473 bytes)
18. Re: [Amps] S/S Amp's (score: 1): Author: "Fuqua, Bill L" <wlfuqu00@uky.edu>; Date: Fri, 13 Sep 2013 17:05:10 +0000; What became known as Exalted AM was really a technique that was used back in the later spark era days once they developed nearly CW sources. In fact that is where the term local oscillator and BFO ca; /archives//html/Amps/2013-09/msg00129.html (13,424 bytes)
19. Re: [Amps] S/S Amp's (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Fri, 13 Sep 2013 20:31:24 -0400; Thanks for the prehistoric trivia lesson (-; I was referring to vacuum tube technology where AM was at least understandable to some degree of quality. Carl KM1H -- Original Message -- From: "Fuqua, B; /archives//html/Amps/2013-09/msg00152.html (13,707 bytes)
20. Re: [Amps] S/S Amp's (score: 1): Author: "Mark Bitterlich" <markbitterlich@embarqmail.com>; Date: Sat, 14 Sep 2013 13:12:29 -0400; Actually I quite enjoyed his comments. Mark WA3JPY p.s. And speaking of trivia ......... KM1H expires in 21 days. The license I mean, not the person. :-) -- Original Message -- From: "Carl" <km1h@jer; /archives//html/Amps/2013-09/msg00164.html (15,286 bytes)

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