I think what Lee meant is that out of the total number of spots
circulating though DX Summit 77% come from the traditional cluster
(telnet) system and 23% are generated by people entering the data using
DX Summit web interface.
Not meaning DX Summit is taking only 77% out of the total number of
spots generated by the traditional cluster system.
At least that's how I understood it.
Martin LU5DX
El 01/03/2017 a las 03:00 p.m., Steve London escribió:
The one question you didn't answer is :
"Why doesn't DX Summit take 100% of the spots from the traditional
cluster system ?"
73,
Steve, N2IC
On 02/28/2017 06:36 PM, Lee Sawkins wrote:
I would like to try and clear up a few things about the spotting
network.
DX Summit currently takes 77% of its spots from the traditional
cluster system. Only 23% of DX Summits spots actually originate on DX
Summit. These spots are identified by the -@ at the end of the
spotters call. The traditional spotting network has all the DX Summit
originated spots. These spots are identified as originating on the
OH8X node. In other words, the traditional cluster system and DX
Summit can both have exactly the same spots. Some DX Clusters,
especially DX Spider nodes block Summit spots by dropping OH8X spots.
OH8X spots are sent to the traditional cluster system by my software,
which monitors DX Summit.
Some wonder why DX Summit doesn't carry skimmer spots. During the
ARRL CW contest there were approximately 4,700,000 RBN(skimmer) spots
in 48 hours. This is an average spot rate of almost 100K spots per
hour for the whole contest. At peak times the rate can exceed 100
spots per second. For some users this would probably be too fast to
watch, although N6MJ could probably do it.
Individual skimmers repeat spots every 10 minutes if the station is
still there and actively CQing. During contests the skimmers get out
of sync with each other. This means that the spots of individual
stations are not spotted every 10 minutes, but rather almost every
minute. My own CC Cluster software filters these spots so they do get
sent to users any more frequently than 3 minutes. This means that
programs like N1MM and probably others will almost always show these
spots as "new" if the station is still using the frequency.
During SSB contests I see myself spotted less than once an hour.
During the CQ160 SSB I was operating VE7NY and we were spotted 13
times in 20 hours. During the CQ160 CW I saw VE7NY spotted by 35
different skimmers in a couple of minutes. The skimmer spots are an
absolute game changer for those of us who are not in the north east
of NA. CW and RTTY contesting have become much more fun for those of
us who aren't rare DX or don't have big signals into Europe.
Connect to a CC Cluster and turn on skimmer spots by "set/skimmer".
Then enter the command "set/own". When you call CQ, you will see
EVERY skimmer spot for your own call. You will know if and where you
are being spotted. If you are not being spotted, you may need to
change your CQ to include "CQ" or "TEST". Simply signing your call or
sending "FOC VE7CC VE7CC FOC" for the FOC contest may result in zero
spots as the RBN is not looking for that identifier. "CQ VE7CC VE7CC
FOC" will magically turn on the skimmer spots.
Lee VE7CC
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