Hi, Jose.
Very professional investigation. Could you spend some more time to investigate
this example of non-assisted entry.
QSO: 3532 CW 2014-11-29 1000 K1DG 599 5 NP4Z 599 08 0
QSO: 3540 CW 2014-11-29 1001 K1DG 599 5 VE7FO 599 03 0
QSO: 3545 CW 2014-11-29 1001 K1DG 599 5 8P5A 599 08 0
QSO: 3554 CW 2014-11-29 1001 K1DG 599 5 VP2MDX 599 08 0
QSO: 3555 CW 2014-11-29 1002 K1DG 599 5 KH7XX 599 31 0
23 khz scan in 2 min!!! with 5 juicy mults including double mults!!! By the way
NP4Z is 12 min. old spot from telnet cluster, VE7FO 15 min., 8P5A 1 min., KH7XX
4 min. As you see all this juicy mults just came from telnet cluster and are
very fresh spots.
Remember, TO7A picked up 8 mults in 8 minutes in 34 khz frame, but K1DG had 5
mults in 2 minutes in 23 khz frame.
Remember that not every station send callsign every QSO and sometimes in pile
up send callsign after 3-4 QSO.
Your investigation will be very interesting.
73's Dim UT5UGR
-------- Исходное сообщение --------
От: José Nunes CT1BOH <ct1boh@gmail.com>
Дата:09.05.2015 10:39 (GMT+02:00)
Кому: cq-contest@contesting.com
Тема: [CQ-Contest] TO7A Comments, Data and Log Checking
It is amazing to me, how some people jump to conclusions without deep
diving into the data.
Some just look at some log lines and feel free to say whatever, as if that
alone would mean anything at all.
First a disclaimer:
Even tough I am a member for CQWW Contest Committee and have been involved
in log checking, for the 2014 events, I did not participate in any checking
process at all. Because of that, I feel free to comment.
The following is done with just public data available on
http://www.cqww.com/publiclogs/ and http://www.reversebeacon.net/raw_data/
This is not a log checking analyses. It is just a brief look, an example,
of the deep analyses needed to make log checking decisions
TO7A is an extraordinary log that has two interesting characteristics:
1. Dueling CQ on two bands - No problem with that. Videos/audio provided by
Dmitry on his youtube account show it well.
2. S&P "events" - Unfortunately, none of the S&P events are covered in his
videos
TO7A log http://www.cqww.com/publiclogs/2014cw/to7a.log has 35 S&P "event"
situations, that netted 638 QSOs, 225 countries and 69 zones.
I will look into just one of these 35 S&P events as an example.
Event number 3 with 8 QSOs on 80 meters. 8 QSO, 8 multiplers, three of them
double mults (KH7XX, TF3SG, YN2CC)
Event starts at 06:38 and ends at 06:46, just 8 minutes during day 1 of the
contest. It should be noted that, before this small 8 minute S&P event,
TO7A had been already active on the band. He already had 50 countries and
10 zones. So this new S&P event, was not the type of, new on the band where
every QSO is a mult, or with band marginal, where one can jump to sparse
stations on the band, very easy to find, using a waterfall scope for
example. At the same time of the S&P event TO7A is also running on 40. So
this is classic SO2R activity - run on one band, S&P on another:
TO7A station 1 is running on 40. Works 13 stations at 97.5 QSOs/H during
the 8 minutes.
TO7A station 2 is S&P on 80. Works 8 stations, all of them multipliers
(OH0X, KH7XX, TF3XG, NP4Z, YN2CC, NP2P, VP2MDX, V47T), during the same 8
minutes.
With RBN data from Reversebeacon site, we can re-create a so call "TO7A
band map", to show what was available and what he needed.
Download RBN data, filter it by band, frequency, call, then cross check
with log and with minimal work this can be done using excel spreadsheet:
There were 293 station running on 80 meters at the time of the 8 minute
period, from 3500 to 3600khz.
This is about average 3 stations per 1 KHZ span - a crowded band - and
indeed it was, as one would expect from beginning of contest, day 1, with
band open to Europe and USA.
60 stations spotted by RBN and running on the band, had already been worked
before, by TO7A, in his previous activity on the band:
So:
293 stations calling CQ and making QSOs on the band from 3500 to 3600Khz
233 station are needed QSOs
29 station are needed multipliers
But looking closer to those 29 needed multipliers, the times they were
spotted (from RBN data) and the QSOs they made (using the public logs), one
can see that 14 of them, even tough spotted on the RBN and on a "band map",
were not available to work, by the time TO7A could have find them (remember
TO7A log shows a steady up tuning during those 8 minutes, 06:38-3526,
06:41-3540, 06:42-3546, 06:42-3547, 06:43-3549, 06:45-3552, 06:46-3554,
06:46-3560).
So, in the end, there were 15 possible needed multipliers
So the bottom line is:
TO7A is running on 40 @ 97.5 QSO/H
TO7A is S&P on 80
In 8 minutes, he is facing 293 station that he does not know who they are,
on a crowded band.
60 stations are dupes, 233 are new and 15 of them happen to be multipliers.
He makes 8 QSOs, all of them multipliers in 8 minutes.
He has to pick a signal out of the 293, stop and listen to QSOs finnish or
CQ call, get each call, then call the station, then go to the next one,
wait for a call,...,and so on. Or he "just" finds the mults out of the
band...
Again, this is just to show you guys, the type of data needed to look at
logs.
Remember TO7A had 35 S&P events like the one described above.... I'm just
looking here, at one of them.
CQWW Log checkers, also have additional tools, like SDR recordings, that
will help check things further.
Remember TO7A only had 8 minutes and worked the 8 multipliers out of 293
possible unknown stations on the band.
Did the multipliers he worked sign their call every minute? Was it possible
to go from one to another in the 8 minutes time frame? or was it needed to
stay more than 8 minutes to get the calls in case they sign only every two
or three QSOs like one would expect from juicy multipliers in heavy pile-up
situations, with high rate, as can be seen from the public logs?
Log checking is much more complex, goes much deeper and takes a lot more
hours than most people think....
A log that deserves attention need hour of manual work, hours of going
through SDR files, hours of preparing the material, hours of peer log
checker group discussion until a decision can be made.
Please give credit to those who do it, that things are done in a
"professional way" with much thought, much discussion...
Just looking at a log line, and saying whatever, is not enough.
73 CT1BOH - José Nunes
--
José Nunes
CONTEST CT1BOH - htt <http://www.qsl.net/ct1boh>p://www.qsl.net/ct1boh
<http://www.qsl.net/ct1boh>
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