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21. Re: [RTTY] Decoder performance on crowded bands (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Mon, 28 Sep 2015 17:09:40 -0400
One potential step toward improved RTTY Skimserv results is to use the CT1BOH "skimquality" filters available through AR Cluster V6. See <http://reversebeacon.blogspot.com/2013/12/a-new-tutorial-on-u
/archives//html/RTTY/2015-09/msg00107.html (16,399 bytes)

22. Re: [RTTY] Decoder performance on crowded bands (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Tue, 29 Sep 2015 07:02:31 -0400
Jeff, I'd be interested to know to what you attribute the reduction in the number of S&P mis-spots. Is it simply because with many Skimmers spotting this year, the chance of someone mistakenly spotti
/archives//html/RTTY/2015-09/msg00127.html (17,168 bytes)

23. [RTTY] The RBN in 2015 CQWW RTTY (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Tue, 29 Sep 2015 07:31:44 -0400
RTTY Contesters may be interested in statistics compiled by Bob, N6TV about RBN spotting during the 2015 CQWWRTTY. Find out who was spotted the most and what their average Signal-to-Noise Ratios were
/archives//html/RTTY/2015-09/msg00128.html (7,047 bytes)

24. [RTTY] Fwd: [RBN-OPS] RTTY Skimmer - non CQ spots (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Wed, 30 Sep 2015 05:05:14 -0400
Sorry to cross post but thought this message would be of current, strong interestto skimmertalk and rtty contesting 73, Pete N4ZR Some frustrations on the RTTY reflectors and my local club Arizona Ou
/archives//html/RTTY/2015-09/msg00157.html (11,034 bytes)

25. [RTTY] RTTY and Skimmer was: Re: Decoder performance on crowded bands (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Thu, 1 Oct 2015 10:37:11 -0400
Hi Don et al - wish I could take credit for that post, but it wasn't me. I can barely spell RTTY. This much I'm pretty sure of - neither CW nor RTTY Skimmer does any post-processing. Once the callsig
/archives//html/RTTY/2015-10/msg00003.html (13,793 bytes)

26. [RTTY] Skimmer Spotting S&P Stations (a little long) (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Fri, 2 Oct 2015 08:39:15 -0400
Following this whole discussion about S&P stations being spotted as runnersled me to wonder whether logging software couldn't do more to address this. For example, N1MM+ (and Classic before it) alway
/archives//html/RTTY/2015-10/msg00012.html (10,270 bytes)

27. Re: [RTTY] Skimmer spots dropped at VE7CC cluster node (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Mon, 5 Oct 2015 06:36:25 -0400
Or conceivably because of less than perfect AFSK (bit jitteror distortion from overdrive?) 73, Pete N4ZR Download the new N1MM Logger+ at <http://N1MM.hamdocs.com>. Check out the Reverse Beacon Netwo
/archives//html/RTTY/2015-10/msg00023.html (10,473 bytes)

28. Re: [RTTY] Skimmer spots dropped at VE7CC cluster node (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Mon, 5 Oct 2015 07:57:43 -0400
Jim, the numbers don't bear that out. Typical busted calls rates with RTTY Skimmer are in the 1.4-1.7 percent range. It would be nice to get them down into the same range as CW Skimmer (< 1 percent),
/archives//html/RTTY/2015-10/msg00026.html (14,636 bytes)

29. Re: [RTTY] Skew dancing(Re: Skimmer spots dropped at VE7CC cluster node) (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Mon, 5 Oct 2015 08:12:53 -0400
Hello, Dai. The way the RBN is supposed to work is this: There is a relatively small group of Skimmers that are known to use highly accurate frequency standards - typically GPS-disciplined oscillator
/archives//html/RTTY/2015-10/msg00027.html (12,291 bytes)

30. Re: [RTTY] Skimmer spots dropped at VE7CC cluster node (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Mon, 5 Oct 2015 14:58:01 -0400
Well, Jim, since the RBN distributed 922,012 RTTY spots from 36 Skimmers during CQWW RTTY, and since my numbers were based on detailed analysis of a half dozen of those, don't you think that the reas
/archives//html/RTTY/2015-10/msg00033.html (16,292 bytes)

31. [RTTY] Contester preference - 1- versus 2-decimal-place spots (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Tue, 13 Oct 2015 21:44:13 -0400
I'm doing some analysis of RTTY spots made by RBN nodes reporting 2 decimal place frequencies. Some of them I know to be using GPS disciplined oscillators, while others aren't. The GPSDO stations gen
/archives//html/RTTY/2015-10/msg00076.html (7,727 bytes)

32. Re: [RTTY] Contester preference - 1- versus 2-decimal-place spots (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Wed, 14 Oct 2015 15:42:53 -0400
Good points, Jeff and Ed. Certainly, there's no benefit in moving someone to 14091.13 rather than 14091.1. One part of this is the old "accuracy vs precision" conundrum. Doesn't do much good to repor
/archives//html/RTTY/2015-10/msg00082.html (13,020 bytes)

33. Re: [RTTY] RBN CQ Spotting (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Fri, 16 Oct 2015 07:20:39 -0400
Hi John - the RTTY Skimmer Server routine for determining a) whether a callsign is valid and b) whether that callsign is associated with a CQ is considerably more complex than the one in CW Skimmer S
/archives//html/RTTY/2015-10/msg00093.html (7,923 bytes)

34. Re: [RTTY] RTTY Skimmer (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Tue, 22 Mar 2016 08:10:38 -0400
I think it is probably both. There are more and more RTTY Skimmers operating now, and N6TV has done a lot to promote the use of waterfalls, though more for finding a run frequency than for S&P. 73, P
/archives//html/RTTY/2016-03/msg00154.html (8,852 bytes)

35. Re: [RTTY] RTTY Skimmer (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Tue, 22 Mar 2016 08:28:16 -0400
One very low-cost way to get your feet wet is to buy a Softrock receiver ($21 kit) crystalled for your Transceiver's IF output (assuming you have one) and run it with RTTY Skimmer. Alternatively, you
/archives//html/RTTY/2016-03/msg00155.html (8,981 bytes)

36. Re: [RTTY] RTTY Skimmer (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Tue, 22 Mar 2016 17:13:37 -0400
I can appreciate Phil's frustration. Those of us working on the RBN are well aware that the differentiation between CQers and callers in RTTY Skimmer Server is still a work in progress. The way it wo
/archives//html/RTTY/2016-03/msg00160.html (11,018 bytes)

37. Re: [RTTY] RTTY Skimmer (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Wed, 23 Mar 2016 06:45:22 -0400
Thanks for calling this out, Ian. I checked, and discovered that DF4UE is running "minimal" validation. I'm sure this is an oversight on his part, and have just sent an e-mail to him suggesting he ad
/archives//html/RTTY/2016-03/msg00167.html (13,333 bytes)

38. Re: [RTTY] RTTY Skimmer - DF4UE (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Wed, 23 Mar 2016 17:44:21 -0400
Another issue which I've discovered since my previous message is that DF4UE is running DL4RCK's scanning decoder software - called the RCK Skimmer. This may be in addition to or in place of RTTY Skim
/archives//html/RTTY/2016-03/msg00174.html (9,058 bytes)

39. Re: [RTTY] RTTY Skimmer (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Thu, 24 Mar 2016 07:09:31 -0400
Sorry Don, but I do not know. I'm copying Alex, VE3NEA, the author of RTTY Skimmer Server. He can probably answer this, and he also needs to know about the need to add DN to the list of CQ tagging ke
/archives//html/RTTY/2016-03/msg00179.html (16,412 bytes)

40. Re: [RTTY] Re Skimmers (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Thu, 31 Mar 2016 07:18:29 -0400
Alex is actively experimenting with several variations on the RTTY Skimmer Server. There are RBN nodes currently running several different versions for statistical comparisons. Please be patient.+ 73
/archives//html/RTTY/2016-03/msg00322.html (8,373 bytes)


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