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Total 67 documents matching your query.

1. Re: [CQ-Contest] Rules for SAC 2020 (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Sat, 22 Aug 2020 17:05:16 -0700
Given a choice I generally prefer unassisted operation myself, but that seems like a lot of umbrage toward the folks doing all the work to host a contest from someone who isn't doing any of it.  The
/archives//html/CQ-Contest/2020-08/msg00097.html (11,822 bytes)

2. Re: [CQ-Contest] Best CW contest rig (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Wed, 16 Sep 2020 11:48:01 -0700
Actually, the encode/decode algorithms used for modes like FT8 are pretty close to AI in principle, in that the decode process applies statistical probabilities to the various bits based upon a known
/archives//html/CQ-Contest/2020-09/msg00081.html (9,080 bytes)

3. Re: [CQ-Contest] Best CW Contest radio..... (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Wed, 16 Sep 2020 12:55:06 -0700
In terms of clean transmitted signals, many of today's rigs are NOT "all great" compared with many older rigs. I've been disappointed to see how many of the replies to the original post only talk abo
/archives//html/CQ-Contest/2020-09/msg00083.html (8,791 bytes)

4. Re: [CQ-Contest] Best CW contest rig (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Wed, 16 Sep 2020 17:42:45 -0700
Yes, I assumed that was the case, Jim.  But if you're shooting for the purity and sanctity of human-sent CW I don't understand why AI error correction would any less impure than the other means you m
/archives//html/CQ-Contest/2020-09/msg00089.html (10,326 bytes)

5. Re: [CQ-Contest] Doctor DX clone (if you never used it, you just don't "get it") (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Tue, 29 Sep 2020 16:15:40 -0700
I don't understand why somebody couldn't come up with essentially the same thing for a current operating system.  I never owned a C-64, but as primitive as it was by today's standards replication of
/archives//html/CQ-Contest/2020-09/msg00124.html (8,489 bytes)

6. Re: [CQ-Contest] Doctor DX clone (if you never used it, you just don't "get it") (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Tue, 29 Sep 2020 18:20:36 -0700
Very impressive!   Thanks! For a modern implementation, any Morse code oscillator could just feed the sound card to provide the hardware interface for a paddle. I wonder if a modern implementation co
/archives//html/CQ-Contest/2020-09/msg00128.html (15,452 bytes)

7. Re: [CQ-Contest] Rule Changes for the CQ WW WPX SSB and CW Contests in 2021 (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Mon, 16 Nov 2020 13:14:47 -0700
It's a new M/M category, not a replacement for the existing M/M category.   It's an "addition", not a "change".   What causes that to be such a bad idea?  Maybe it is, but I'm having a difficult time
/archives//html/CQ-Contest/2020-11/msg00111.html (12,341 bytes)

8. Re: [CQ-Contest] Rule Changes for the CQ WW WPX SSB and CW Contests in 2021 (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Mon, 16 Nov 2020 17:52:48 -0700
2. Contests are better served by having lots of different stations to work. If multiple stations show up in the contest as one station, that's fewer people for everybody else to work. is marginal at
/archives//html/CQ-Contest/2020-11/msg00126.html (17,320 bytes)

9. Re: [CQ-Contest] RES: CQ WPX M/M Distributed Category Update (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Fri, 2 Apr 2021 12:20:02 -0700
It's probably worth pointing out that computer gaming in almost any form (PC, console, mobile) FAR outweighs ham radio in popularity (and financial support) across all age groups, but particularly am
/archives//html/CQ-Contest/2021-04/msg00036.html (14,237 bytes)

10. Re: [CQ-Contest] RES: CQ WPX M/M Distributed Category Update (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Sat, 3 Apr 2021 09:01:37 -0700
Bad analogy ... as usual. You would still have to make the contact strictly via RF, and you wouldn't be able to claim the contact unless the other guy verified it in real time.  It would be a radio c
/archives//html/CQ-Contest/2021-04/msg00045.html (11,738 bytes)

11. Re: [CQ-Contest] Funny/strange things heard in 'WPX (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Tue, 1 Jun 2021 15:07:21 -0700
You were using a prefix from the same country or DX entity ... so no problem.  KH6 operating from Ohio represents a different DX entity. WR8AA is the same country/entity as the U.S. 3rd call district
/archives//html/CQ-Contest/2021-06/msg00012.html (9,571 bytes)

12. Re: [CQ-Contest] You gotta let me know, should M/M Distributed stay or go. (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Wed, 2 Jun 2021 14:43:39 -0700
Paul, The same argument could be made for ANY remote operation, and you are most definitely swimming upstream (and mostly alone) on that. And in spite of the countless times you have mercilessly flog
/archives//html/CQ-Contest/2021-06/msg00043.html (12,724 bytes)

13. Re: [CQ-Contest] Mk2R+ optocouplers (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Tue, 8 Jun 2021 11:22:34 -0700
This is an interesting situation to me since back in the 1970's I was the optocoupler product engineer at Motorola Semiconductor ... now OnSemi, and of course OnSemi acquired Fairchild several years
/archives//html/CQ-Contest/2021-06/msg00082.html (12,770 bytes)

14. Re: [CQ-Contest] Mk2R+ optocouplers (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Tue, 8 Jun 2021 20:12:54 -0700
I suspect that the lower frequency ones aren't being driven with as much LED current.  If anyone has the schematic they should be able to determine if that is true or not.  Faster speed doesn't typic
/archives//html/CQ-Contest/2021-06/msg00085.html (10,348 bytes)

15. Re: [CQ-Contest] Mk2R+ optocouplers (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Tue, 8 Jun 2021 23:30:14 -0700
Yeah, that would be 5 milliamps for all of them, which certainly is not an excessive amount of drive current.  Most application notes for optocouplers tended to spec about 10 milliamps for a typical
/archives//html/CQ-Contest/2021-06/msg00089.html (13,135 bytes)

16. Re: [CQ-Contest] Mk2R+ optocouplers (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Wed, 9 Jun 2021 18:34:23 -0700
I was kind of sloppy there.  Given the Vf of an infrared LED, the drive current would be less than 4 milliamps. 73, Dave   AB7E Yeah, that would be 5 milliamps for all of them, which certainly is not
/archives//html/CQ-Contest/2021-06/msg00095.html (9,769 bytes)

17. Re: [CQ-Contest] Contesting and the FT8 Revolution (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Sat, 19 Jun 2021 15:32:45 -0700
I've harped on this before, but it bothers me that everyone constantly seems to equate FT8 the mode with WSJT-X the format.  FT8 the mode is an astounding application of digital processing to achieve
/archives//html/CQ-Contest/2021-06/msg00144.html (15,670 bytes)

18. Re: [CQ-Contest] Contesting and the FT8 Revolution (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Sun, 20 Jun 2021 12:37:33 -0700
You are correct, Paul.  WSJT-X requires operator involvement to initiate every contact, but as you say there are ways around that. There are derivatives of WSJT-X out there that don't have that requi
/archives//html/CQ-Contest/2021-06/msg00158.html (10,616 bytes)

19. Re: [CQ-Contest] Contesting and the FT8 Revolution (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Mon, 21 Jun 2021 11:59:05 -0700
Everything you just said there is the fault of WSJT-X as a user interface ... not FT8 or FT4 as a mode.  They are NOT the same thing.  WSJT-X is simply the narrow and restrictive vehicle by which we
/archives//html/CQ-Contest/2021-06/msg00171.html (15,268 bytes)

20. Re: [CQ-Contest] Contesting and the FT8 Revolution (score: 1)
Author: David Gilbert <ab7echo@gmail.com>
Date: Mon, 21 Jun 2021 15:43:02 -0700
It would be interesting to know just how many db is lost due to asynchronous decoding, but let's say it's a lot and synchronous decoding is required.  That would be a minor sacrifice and everything e
/archives//html/CQ-Contest/2021-06/msg00176.html (17,418 bytes)


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