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361. Re: [RTTY] Odd RTTY signal, 3 pair of tones w/ 3 diff shifts (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Sun, 5 Aug 2007 17:09:16 -0700
Quite often, unfortunately. A double-spaced shift is usually in the correct polarity (not reversed) and is caused by someone severely overdriving an AFSK signal. For example, if your nominal audio ma
/archives//html/RTTY/2007-08/msg00025.html (8,853 bytes)

362. Re: [RTTY] Ebay question (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Mon, 13 Aug 2007 15:26:11 -0700
Ouch, that hurts. :-) 73 Chen, W7AY _______________________________________________ RTTY mailing list RTTY@contesting.com http://lists.contesting.com/mailman/listinfo/rtty
/archives//html/RTTY/2007-08/msg00070.html (6,698 bytes)

363. Re: [RTTY] Using Windows Contesting Software on a Mac (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Thu, 16 Aug 2007 12:35:59 -0700
I'll throw in my two cents by offering some clarification. There are really three distinct classes of products -- emulators, virtualization and dual-boot... -- Emulators -- SoftWindows, SoftPC and Vi
/archives//html/RTTY/2007-08/msg00086.html (12,689 bytes)

364. Re: [RTTY] Some observations in SCC (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Tue, 28 Aug 2007 12:30:16 -0700
RSQ can be useful for normal QSOs. <rant> But who really cares if it is RST or RSQ when someone just sends an 599 anyway, even to a signal that is splattering all over. IMHO, if you want to use Q, th
/archives//html/RTTY/2007-08/msg00161.html (7,962 bytes)

365. Re: [RTTY] CQ-Contest SO2R (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Sat, 15 Sep 2007 10:18:30 -0700
I think John has hit the nail on the head. Even though it is seldom that people have the 10 dB gain over an average antenna as they do running an amplifier, antennas help not just in the transmit dir
/archives//html/RTTY/2007-09/msg00137.html (9,613 bytes)

366. Re: [RTTY] CQ-Contest SO2R (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Sat, 15 Sep 2007 10:25:58 -0700
Since people are so opposed to an SO2R category, perhaps what should be created instead is an SO1R category, eh? Let the SO2R guys operate in the so called Unlimited SO category. A rose by any name..
/archives//html/RTTY/2007-09/msg00138.html (7,203 bytes)

367. Re: [RTTY] [CQ-Contest] CUT NUMBERS??? ON RTTY?!?!?! (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Sat, 22 Sep 2007 15:30:53 -0700
Perhaps it came from PSK31, where the varicode for 'n' is much shorter than '9' ? :-) Never mind the extra LTRS shift in RTTY! Maybe I will make up a macro to send a 'TOO' back to them :-). UE Chen,
/archives//html/RTTY/2007-09/msg00317.html (7,563 bytes)

368. Re: [RTTY] is this an omen (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Mon, 1 Oct 2007 13:43:43 -0700
I think the DJIA is listening up, OM. It ended the day with the QSX at 14087.55. UP LID! (not you, Barry :-) Chen, W7AY _______________________________________________ RTTY mailing list RTTY@contesti
/archives//html/RTTY/2007-10/msg00023.html (6,415 bytes)

369. Re: [RTTY] From the 3B7C team (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Wed, 3 Oct 2007 10:52:57 -0700
Ekki is wise. When asked for a state fill, I often send it as "OR OR OREGON". "OR OR" is too fraught with problems of aliasing into another state's abbreviation (four states and one territory), espec
/archives//html/RTTY/2007-10/msg00070.html (9,240 bytes)

370. Re: [RTTY] Bletchley Park (WWII Code Centre) Collosus code breakingevent (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Wed, 10 Oct 2007 11:40:04 -0700
Didn't Alan Turing do all of the above? And with the added pressure that the world would blow up around him if he didn't succeed. Anybody knows if they intend to publish a WAV file of the transmissio
/archives//html/RTTY/2007-10/msg00167.html (8,113 bytes)

371. Re: [RTTY] single op, 1 radio, 2 recvrs (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Thu, 11 Oct 2007 08:22:22 -0700
Since the single receiver on the Flex-5000 is fully duplex with the transmitter, it means that you can already be simultaneously listening on one band while transmitting on another. You are almost fu
/archives//html/RTTY/2007-10/msg00184.html (7,584 bytes)

372. Re: [RTTY] LoTW/Makrothen (Contesting) (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Fri, 12 Oct 2007 10:04:53 -0700
On Oct 12, 2007, at 8:25 AM, Graham Ridgeway wrote in response to W9OL: You don't know Bill WA9VOL (umm, I mean W9OL) well, do you? :-) :-) Now that he has been dared, he might even send some RSQ and
/archives//html/RTTY/2007-10/msg00209.html (8,136 bytes)

373. Re: [RTTY] single op, 1 radio, 2 recvrs (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Tue, 16 Oct 2007 12:19:46 -0700
What's the difference? We are told that it is the skill of the shooter that matters :-) :-) 73 Chen, W7AY _______________________________________________ RTTY mailing list RTTY@contesting.com http://
/archives//html/RTTY/2007-10/msg00283.html (7,457 bytes)

374. Re: [RTTY] A challenge to RTTY operators! (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Thu, 15 Nov 2007 09:52:16 -0800
One of the the reasons PSK31 feels slow is due to that 1/2 to 1 second squelch tail at the end, where PSK31 goes into idle mode and then sends a short unmodulated carrier. That is why you hear the vi
/archives//html/RTTY/2007-11/msg00124.html (8,833 bytes)

375. [RTTY] Lorenz Teleprinter (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Fri, 16 Nov 2007 14:28:25 -0800
I forget who mentioned the Colossus/Lorenz code cracking challenge on the RTTY Reflector a couple of weeks ago? Well, it was cracked by a German using homebrewed software written in Ada (gulp), while
/archives//html/RTTY/2007-11/msg00144.html (7,059 bytes)

376. Re: [RTTY] Lorenz Teleprinter (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Fri, 16 Nov 2007 14:38:18 -0800
Found more details here, from the horse's mouth: http://www.schlaupelz.de/SZ42/SZ42_software.html Ausgezeichnet! 73 Chen, W7AY _______________________________________________ RTTY mailing list RTTY@c
/archives//html/RTTY/2007-11/msg00145.html (6,410 bytes)

377. Re: [RTTY] Use of Oscilloscope In RTTY (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Thu, 29 Nov 2007 10:42:28 -0800
Many years ago, I'd used a Textronix instrumentation scope (a 5" rectangular tube that had fixed gain x, y and z amplifiers, with no timebase), tapping the Mark and Space signals from a modified KAM
/archives//html/RTTY/2007-11/msg00243.html (11,451 bytes)

378. Re: [RTTY] USOS !) !) !) !) (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Sun, 2 Dec 2007 20:24:49 -0800
John, I think the problem is that your software is making the assumption that the other end is receiving using USOS. So it does not send a <LTRS> shift between 599 and FL, but instead depends on the
/archives//html/RTTY/2007-12/msg00027.html (8,245 bytes)

379. Re: [RTTY] Will You Let FCC Kill PACTOR3? (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Thu, 27 Dec 2007 10:23:38 -0800
For details, go to http://www.southgatearc.org/news/december2007/bandwidth_band_plan.htm where you can find links to the pdfs of the original RM. The following are my impressions. RM-11392 proposes t
/archives//html/RTTY/2007-12/msg00189.html (8,523 bytes)

380. Re: [RTTY] RTTY Roundup - PSK ?? (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Sat, 29 Dec 2007 16:43:00 -0800
Definitely. You can ask Barry (UP! UP!), who breezed away with the first PSK plaque. 73 Chen, W7AY _______________________________________________ RTTY mailing list RTTY@contesting.com http://lists.c
/archives//html/RTTY/2007-12/msg00217.html (8,224 bytes)

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