[CQ-Contest] DX Summit Spots and more.

[Martin LU5DX]

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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