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281. Re: [RTTY] Age (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Mon, 17 Oct 2005 10:55:50 -0700
Only a problem for WA1EHK, W1DY, XE1CI and VP5JM :-) Speaking of which, when I worked the XF4CI expedition, Nellie was the one on the keyboard. I sent a TU OM and Nellie came back to correct me that
/archives//html/RTTY/2005-10/msg00167.html (6,703 bytes)

282. Re: [RTTY] VE1OP JARTS RTTY (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Mon, 17 Oct 2005 12:04:41 -0700
A Baudot "8" is binary 00110 and a Baudot "9" is binary 11000. There is a small finite chance that a 2-bit clock slippage had changed a 9 into the 8, but really not very likely. Other bit decoding er
/archives//html/RTTY/2005-10/msg00172.html (7,667 bytes)

283. Re: [RTTY] Age (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Mon, 17 Oct 2005 13:45:42 -0700
Before you get there, you have to first be a "club" for a year. And if they only allow 2 digits, you will have to operate as a YL for the year after that :-). Only after that can you start your secon
/archives//html/RTTY/2005-10/msg00177.html (7,283 bytes)

284. Re: [RTTY] FW: OO Advisory kk5oq (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Thu, 20 Oct 2005 08:47:50 -0700
A normal RTTY signal has a shift of 170 Hz, but the -30 dB points are normally about 350 Hz to 450 Hz wide (even wider if you are using an FSK rig that has keyclicks). The mystery deepens since it t
/archives//html/RTTY/2005-10/msg00245.html (7,712 bytes)

285. Re: [RTTY] FW: OO Advisory kk5oq (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Thu, 20 Oct 2005 14:33:57 -0700
Ian, G3SEK and I had traded some private email in the past over this. You can view FSK as synchronous OOK (on-off keying - a.k.a. "CW") by two carriers that are spaced by the RTTY shift. When you tra
/archives//html/RTTY/2005-10/msg00249.html (12,340 bytes)

286. Re: [RTTY] FW: OO Advisory kk5oq (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Thu, 20 Oct 2005 16:04:51 -0700
At one time, G3SEK and I checked the schematics very carefully, and had reported to this reflector. My FT-990 is definitely Keyed FSK (i.e., FSK interface, but an internal AFSK generator that feeds a
/archives//html/RTTY/2005-10/msg00251.html (8,167 bytes)

287. Re: [RTTY] FW: OO Advisory kk5oq (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Thu, 20 Oct 2005 16:11:19 -0700
Whoops, that should be "Keyed AFSK," not "Keyed FSK" (which makes no sense :-). 73 Chen, W7AY _______________________________________________ RTTY mailing list RTTY@contesting.com http://lists.contes
/archives//html/RTTY/2005-10/msg00252.html (7,465 bytes)

288. Re: [RTTY] FW: OO Advisory kk5oq (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Fri, 21 Oct 2005 08:24:19 -0700
Those are usually bad AFSK signals. I have been known to futilely answer CQs from a station, only to find him again, usually another 2125 Hz down! :-) If the station is loud and I need it for a mult,
/archives//html/RTTY/2005-10/msg00262.html (8,723 bytes)

289. [RTTY] AFSK splatter (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Sat, 22 Oct 2005 12:02:48 -0700
Hi Robert, (I have changed the Subject line so poor Charles can get a reprieve :-). I agree with you that clipped waveforms is a potential source of problem. Furthermore, depending on where the clipp
/archives//html/RTTY/2005-10/msg00268.html (9,318 bytes)

290. [RTTY] FSK sidebands (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Sun, 23 Oct 2005 15:14:35 -0700
Hi gang, I did some number crunching this morning (I cheated and just modified pieces of one of the programs I had written earlier) and generated some short term spectra and matched filter waveforms
/archives//html/RTTY/2005-10/msg00285.html (6,426 bytes)

291. Re: [RTTY] RTTY In CW Bands ? (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Sat, 12 Nov 2005 08:36:53 -0800
Don't you mean SHEAR LOONACIE, Bill? :-) :-) 73 Chen, W7AY _______________________________________________ RTTY mailing list RTTY@contesting.com http://lists.contesting.com/mailman/listinfo/rtty
/archives//html/RTTY/2005-11/msg00081.html (7,558 bytes)

292. Re: [RTTY] my first & only comment on packet (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Thu, 15 Dec 2005 14:18:21 -0800
You don't have to deal with Cabrillo robots. You don't care if you have worked the Yukon or North Dakota mults. You can operate (Roundup) more hours than other single ops (or not). 73 Chen, W7AY ____
/archives//html/RTTY/2005-12/msg00116.html (8,343 bytes)

293. Re: [RTTY] Suggestion for upcoming RTTY Roundup (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Sat, 31 Dec 2005 13:06:50 -0800
Hmmm, perhaps sending "5NN OR OR" instead of "599 OR OR" is not such a bad idea after all !! HI HI UE and Happy New Year. See y'all in the Roundup. I will be operating W9OL-style (single op, don't ca
/archives//html/RTTY/2005-12/msg00361.html (8,909 bytes)

294. Re: [RTTY] Suggestion for upcoming RTTY Roundup (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Sun, 1 Jan 2006 14:24:57 -0800
Just like I usually send DE W7AY W7AY to keep the programs that need "DE" happy. 73 Chen _______________________________________________ RTTY mailing list RTTY@contesting.com http://lists.contesting.
/archives//html/RTTY/2006-01/msg00018.html (7,490 bytes)

295. Re: [RTTY] State exchanges in RU (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Mon, 9 Jan 2006 11:16:32 -0800
After sending my exchange, one station came back with OR? OK? So I sent a Roger as confirmation... and immediately realized that he was not asking if the Oregon he copied was OK, but rather to ask if
/archives//html/RTTY/2006-01/msg00147.html (7,827 bytes)

296. Re: [RTTY] CQ vs. S&P for RTTY Round-UP (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Mon, 9 Jan 2006 11:43:54 -0800
AR AR (can't wait for W7TI's comments :-) 73 Chen, W7AY _______________________________________________ RTTY mailing list RTTY@contesting.com http://lists.contesting.com/mailman/listinfo/rtty
/archives//html/RTTY/2006-01/msg00151.html (6,909 bytes)

297. Re: [RTTY] Is West Virginia rare??? (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Mon, 9 Jan 2006 16:28:44 -0800
Also K7GQ, but Harry operated KH6CW this past weekend. Vy 73 Chen _______________________________________________ RTTY mailing list RTTY@contesting.com http://lists.contesting.com/mailman/listinfo/rt
/archives//html/RTTY/2006-01/msg00168.html (7,909 bytes)

298. Re: [RTTY] NAQP RTTY on NCDXF Beacon] (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Tue, 10 Jan 2006 16:34:53 -0800
You can generate a compatible RTTY signal using either USB or LSB (I switch between them all the time). All that is required to be compatible with other folks is that the Mark is the higher of the tw
/archives//html/RTTY/2006-01/msg00220.html (9,141 bytes)

299. Re: [RTTY] Roundup Log (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Thu, 12 Jan 2006 12:25:53 -0800
I sent mine right after the contest, using a subject line that I'd used successfully last year and received the following -- (scissor) -- (This is an automatic reply.) W7AY.log is not a valid callsig
/archives//html/RTTY/2006-01/msg00271.html (8,144 bytes)

300. Re: [RTTY] RTTY Best Practices (score: 1)
Author: Kok Chen <chen@mac.com>
Date: Fri, 13 Jan 2006 18:39:21 -0800
It is not just a good idea, it is plain courtesy to the S&P guys like me. Otherwise I would have to wait until you CQ again, or more likely, I will just keep tuning to find the next station up the ba
/archives//html/RTTY/2006-01/msg00305.html (10,595 bytes)

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