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21. Re: [RTTY] extfsk & omni6 (score: 1)
Author: "Doug Hall" <k4dsp.doug@gmail.com>
Date: Wed, 28 Feb 2007 21:32:06 -0500
Before you blame the rig, you should know that the serial ports on some laptop computers don't meet RS-232C specifications for voltage levels. You may not be able to go negative enough to cause the T
/archives//html/RTTY/2007-02/msg00471.html (7,988 bytes)

22. Re: [RTTY] re the blacklisting (score: 1)
Author: "Doug Hall" <k4dsp.doug@gmail.com>
Date: Tue, 17 Apr 2007 15:03:16 -0400
I had the same experience while working 30m CW from J3 some years back. For some reason one night the pileup was just huge, tons of EU, and I managed it by sending "UP 1" and working folks who were u
/archives//html/RTTY/2007-04/msg00212.html (8,847 bytes)

23. Re: [RTTY] New type of signal? (score: 1)
Author: "Doug Hall" <k4dsp.doug@gmail.com>
Date: Wed, 9 May 2007 11:29:47 -0400
That sounds like DominoEX. It can run as slow as 4 baud. I think the default is 11 baud. It uses 18 tones, as I recall. Doug, K4DSP _______________________________________________ RTTY mailing list R
/archives//html/RTTY/2007-05/msg00045.html (7,172 bytes)

24. Re: [RTTY] RTTY with an Icom radio (score: 1)
Author: "Doug Hall" <k4dsp.doug@gmail.com>
Date: Thu, 7 Jun 2007 10:25:23 -0400
765 or 756? Jim's comment about it being bombproof make me think it really is the older 765, and not any of the newer rigs. The older IC-765 really was a great radio. It works well on RTTY, and can h
/archives//html/RTTY/2007-06/msg00038.html (9,954 bytes)

25. Re: [RTTY] CI-V issue (score: 1)
Author: "Doug Hall" <k4dsp.doug@gmail.com>
Date: Thu, 14 Jun 2007 11:12:34 -0400
One year ago I sent my 756Pro3 to the Icom repair facility in South Carolina. As I recall they repaired the CI-V port (damaged by a near-by lightning strike) and returned the rig to me for around $16
/archives//html/RTTY/2007-06/msg00128.html (7,195 bytes)

26. Re: [RTTY] 250 Hz or 350 Hz Filter for the Mobile? (score: 1)
Author: "Doug Hall" <k4dsp.doug@gmail.com>
Date: Thu, 28 Jun 2007 19:44:40 -0400
JT, I purchased the 350 Hz filter and have been quite pleased with it. I run mobile CW almost exclusively with my 706Mk2G. But from time to time I operate RTTY from the car while my wife drives, and
/archives//html/RTTY/2007-06/msg00266.html (8,395 bytes)

27. Re: [RTTY] First K3 FSK QSO Tonight (score: 1)
Author: "Doug Hall" <k4dsp.doug@gmail.com>
Date: Tue, 17 Jul 2007 12:13:56 -0400
Apparently quite a few people do "get it" since the first two production runs are said to be sold out. The expectation is that the K3 will provide receiver performance that exceeds radios anywhere ne
/archives//html/RTTY/2007-07/msg00113.html (9,468 bytes)

28. Re: [RTTY] what mode is this? (score: 1)
Author: "Doug Hall" <k4dsp.doug@gmail.com>
Date: Mon, 30 Jul 2007 14:37:03 -0400
ALE (the FED-STD-1045 version at least) sounds a bit like a turkey gobbling, only with a higher pitch. It consists of 8-ary FSK using 750, 1000, 1250, 1500, 1750, 2000, 2250, and 2500 Hz tones. Occup
/archives//html/RTTY/2007-07/msg00194.html (7,494 bytes)

29. Re: [RTTY] Use of Oscilloscope In RTTY (score: 1)
Author: "Doug Hall" <k4dsp.doug@gmail.com>
Date: Thu, 29 Nov 2007 13:15:22 -0500
John, In order to use an oscilloscope for RTTY tuning you need a terminal unit with mark and space filter outputs, or at the very least you need a couple of filters at the mark and space frequencies
/archives//html/RTTY/2007-11/msg00240.html (9,308 bytes)

30. Re: [RTTY] Fw: ALE Sounding. What is it and how does it work? (score: 1)
Author: "Doug Hall" <k4dsp.doug@gmail.com>
Date: Fri, 11 Jan 2008 11:21:04 -0500
Having designed ALE systems over 20 years ago and having been involved in the early testing and deployment FED-STD-1045 ALE systems on commercial HF circuits I have a bit of experience here. The soun
/archives//html/RTTY/2008-01/msg00178.html (11,779 bytes)

31. [RTTY] Any ND or ME using LoTW? (score: 1)
Author: "Doug Hall" <k4dsp.doug@gmail.com>
Date: Fri, 11 Jan 2008 15:50:28 -0500
Despite working a number of ND and ME stations on RTTY I have yet to work one in either state who uses LoTW. I'm missing those two states to have RTTY WAS via LoTW. For reasons I can't explain I'd re
/archives//html/RTTY/2008-01/msg00181.html (6,578 bytes)

32. [RTTY] RTTY QSOs on LoTW logged as FSK31? (score: 1)
Author: "Doug Hall" <k4dsp.doug@gmail.com>
Date: Sun, 20 Jan 2008 21:25:50 -0500
Hi all, My day-to-day logging program logs RTTY QSOs as "FSK" which has never been a problem with LoTW until recently. But sometime in the not-too-distant past I noticed that QSOs logged as FSK show
/archives//html/RTTY/2008-01/msg00267.html (7,760 bytes)

33. [RTTY] AFSK-to-FSK Circuit (score: 1)
Author: "Doug Hall" <k4dsp.doug@gmail.com>
Date: Sat, 8 Mar 2008 01:39:55 -0500
Hi All, There has been some discussion in the past about how to generate an FSK signal if you don't have a serial port or if your RTTY software doesn't support FSK. If you find yourself in this situa
/archives//html/RTTY/2008-03/msg00052.html (7,583 bytes)

34. Re: [RTTY] Rascal FSK (score: 1)
Author: "Doug Hall" <k4dsp.doug@gmail.com>
Date: Wed, 26 Nov 2008 09:33:15 -0500
Dennis, FSK won't work unless you have a USB-to-Serial adapter that can be programmed for 5 data bits and 45 baud. Many (most?) of these devices do not support this configuration, whereas nearly all
/archives//html/RTTY/2008-11/msg00199.html (7,659 bytes)

35. Re: [RTTY] CQ to accept eQSL for Awards.. (score: 1)
Author: "Doug Hall" <k4dsp.doug@gmail.com>
Date: Wed, 14 Jan 2009 15:24:51 -0500
What a pompous, arrogant response. Pure bovine excrement. Do you really have firsthand knowledge of his situation? Do you know him to be a dishonest person? Your post says more about you than his rel
/archives//html/RTTY/2009-01/msg00372.html (8,658 bytes)

36. Re: [RTTY] RTTY Contest logging program for thsi weekend (score: 1)
Author: Doug Hall <k4dsp.doug@gmail.com>
Date: Fri, 25 Sep 2009 08:46:56 -0400
Allan, Go get N1MM Logger from http://pages.cthome.net/n1mm It integrates with MMTTY and does what you want. 73, Doug K4DSP _______________________________________________ RTTY mailing list RTTY@cont
/archives//html/RTTY/2009-09/msg00093.html (7,941 bytes)

37. [RTTY] Fldigi (was Re: Questions) (score: 1)
Author: Doug Hall <k4dsp.doug@gmail.com>
Date: Thu, 17 Jun 2010 15:13:38 -0400
I've found Fldigi easy to set up and use under Mac OS X. But in my experience it does not copy RTTY as well as cocoaModem. So far I have not found anything that does. 73, Doug K4DSP _________________
/archives//html/RTTY/2010-06/msg00342.html (7,209 bytes)

38. Re: [RTTY] Motherboard Recommendation (score: 1)
Author: Doug Hall <k4dsp.doug@gmail.com>
Date: Thu, 1 Jul 2010 14:25:48 -0400
For the majority of stuff hams do there is probably no big advantage to USB, and sometimes there are disadvantages (driver issues, OS dependency, etc.) But the migration to USB (and away from RS-232)
/archives//html/RTTY/2010-07/msg00013.html (10,106 bytes)

39. Re: [RTTY] New call with no numbers (score: 1)
Author: Doug Hall <k4dsp.doug@gmail.com>
Date: Fri, 3 Dec 2010 09:38:17 -0500
The CK722 was one of the first commercially available transistors. Germanium, I believe. I have a 1957 QST with a construction article for a receiver using CK722 transistors. The author mentions that
/archives//html/RTTY/2010-12/msg00020.html (9,114 bytes)

40. Re: [RTTY] DOS computer for improved RTTY reception? (score: 1)
Author: Doug Hall <k4dsp.doug@gmail.com>
Date: Wed, 19 Jan 2011 19:26:42 -0500
I've used MMTTY extensively as well as just about every other software-based modem including RITTY years ago. I've also used a dozen different terminal units and have homebrewed several more, includi
/archives//html/RTTY/2011-01/msg00672.html (9,621 bytes)

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