--- On Mon, 5/4/09, Gene Gabry <gene_n9tf@yahoo.com> wrote:
From: Gene Gabry <gene_n9tf@yahoo.com>
Subject: Re: [VHFcontesting] Picking a Bone With Gene
To: "Les Rayburn" <les@highnoonfilm.com>
Date: Monday, May 4, 2009, 5:16 PM
With the same respect Les, I would agree with Gene's comments. With FSK441 it
IS the computer software that is decoding and desiphering (SP?) the signal and
it's contents within the "noise" of the receiver that the human ear cannot
detect to desipher. In CW and SSB the "human" ear and brain make the judgement
as to what is being heard and report that to the log. I think the line is drawn
as to who or what is actually decoding the data. The question is now, what is
the point of the contest? Is it a test of the human element, or the computer
and it's software? To take it another step further, I would venture to say that
most SSB and CW contacts are random, more often than computer generated types,
that mostly require a sked. Which makes SSB and CW contacts more of an unknown,
as I've gotta listen and concentrate to get the data. Whereas in WSJT mode,
with a sked, the two ops already know what to be watching for on the screen,
and if it's close, it's in the
log.
Don't get me wrong, I think the no signal heard or seen digital modes are
wonderful and I do use them occasionally. I go back to my original question,
what are we testing in a contest, human ability to decode or machine?
Gene N9TF
--- On Mon, 5/4/09, Les Rayburn <les@highnoonfilm.com> wrote:
From: Les Rayburn <les@highnoonfilm.com>
Subject: [VHFcontesting] Picking a Bone With Gene
To: "VHF Contesting Reflector" <vhfcontesting@contesting.com>,
vhf@w6yx.stanford.edu, "WSJT Group" <wsjtgroup@yahoogroups.com>, "Eugene
Zimmerman" <ezimmerm@erols.com>
Date: Monday, May 4, 2009, 12:07 PM
With all due respect to Gene Zimmerman, W3ZZ, I have to disagree with some
statements that he made in the May 2009 Issue of QST. In his column, "The World
Above 50Mhz" Gene writes;
"we must consider FSK441 digital contacts that, while sometimes more difficult
to set up, technically utilize the skill of Joe Taylor, K1JT, as a software
author to complete".
Sorry Gene, but using that logic, you're technically using the skills of Icom
engineers, or TE Systems design to complete your SSB or CW contacts. There is
certainly skill involved in making FSK441 meteor scatter contacts, especially
those on the fringe areas of possible propagation range.
Predicting optimum paths, time of day, and time of year are a big part of the
equation. To get good at it takes a fair amount of study on the part of the
operator. Also, station designed must be optimized for meteor scatter work. And
manipulating the software to pull out really distant contacts has a pretty step
learning curve. Please explain how that differs from similar skill sets used in
other areas of contesting.
If your experience with the mode is limited to working a few super stations
with high power, large gain antennas, and optimum paths on 6 Meters, then yes,
perhaps the contacts could be considered almost "automatic". But try those
modest station contacts on 222 or 432 and see how easy it is.
Gene goes on to say, "Given even a modest station-100W to a small beam- most of
your WSJT contacts are guaranteed if the other station shows up."
Again, I'm not sure how active Gene is on WSJT, but contacts, even with
stations much better equipped than he describes are hardly guaranteed. In fact,
the majority of contacts attempted during contests or any other period are not
completed. Even when coordinated using resources like Ping Jockey. At least not
on 2 Meters. During last year's contests I had WSJT skeds with a number of
stations, and completed only two of those. Some of these were with powerhouse
contests stations, who were multi-op.
After contest correspondence revealed that they did indeed "show up" but the
rox simply didn't allow the contact to be completed before one or both of us
had to move on to another attempt.
These remarks reveal a basis than many VHF men have toward the digital modes.
Since it's new and unfamiliar to them, they dismiss it as being somehow "less
than" the older modes. I think this is very contrary to the pioneering spirit
of the bands. In the 1940's and 50's, don't you think that anyone in the ranks
of VHF/UHF work would have given their eye teeth for a mode that would offer
several db of improvement over CW?
All that being said, Zimmerman's logic about adding distance scoring to the
September contest makes a lot of sense. I believe that it would encourage VHF
men to give WSJT more of their operating time, which I think would be healthy
for all of us. For some of us who have compromised stations, WSJT represents
the best chance for awards like VUCC on 2 Meters, but the lack of stations
using the mode makes that difficult. I think a distance scoring based contest
would increase the usage of WSJT, and further development of the software would
advance the state of the art.
73,
Les Rayburn, N1LF
EM63nf
121 Mayfair Park
Maylene, AL 35114
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