[Skimmertalk] Bad Skimmer Spots

[Lee Sawkins]

Yes, CC Cluster does a local lookup using the latest FCC data.  Nothing to 
do with QRZ.

Although it is a good idea to drop non issued USA calls, the point I was 
trying to make is that there are many broken calls that look exactly like 
good ones.  These ones are only detectable as they are not currently valid 
FCC ones.  You cannot simply look at the output of a skimmer for obvious 
broken calls and use that as a measure of how accurate its spotting is. 
Something to remember when running "normal" validation.

As skimmer operators can and do change validation levels it would be nice to 
see what level they are currently using displayed in their spots.  If using 
"aggressive" perhaps you could accept their spots without further 
processing.  If "normal" then maybe you need several "normals" that agree on 
the calls.

Lee


----- Original Message ----- 
From: "Pete Smith" <n4zr at contesting.com>
To: "Lee Sawkins" <ve7cc at shaw.ca>
Cc: <Skimmertalk at contesting.com>
Sent: Friday, February 04, 2011 6:15 AM
Subject: Re: [Skimmertalk] Bad Skimmer Spots


> Lee, do you mean that CC Cluster performs a QRZ lookup (or equivalent) for 
> each call it is "considering" spotting?  If so, does this require some 
> sort of subscription with QRZ?
>
> 73, Pete N4ZR
>
> The World Contest Station Database, updated daily at 
> www.conteststations.com
> The Reverse Beacon Network at http://reversebeacon.net, blog at 
> reversebeacon.blogspot.com,
> spots at telnet.reversebeacon.net, port 7000
>
>
>
> On 2/3/2011 5:12 PM, Lee Sawkins wrote:
>> Here is a small subset of bad skimmer spots. I am looking at a full feed 
>> from the RBN.
>>
>> These are only spots for USA calls that have not been issued.  Many times 
>> the first letter of a call is missing.  Many of these are actually 
>> Italian calls with the "I" missing.
>>
>> http://www.bcdxc.org/ve7cc/notissue.txt
>>
>> I will update the list from time to time.
>>
>> CC Clusters drop these bad calls.
>>
>> There are many other non USA calls that are wrong which also have the 
>> first
>> letter missing. These are harder to find.
>>
>> Other bad calls occur when the last letter is missing or truncated or is 
>> added
>> +in error.
>>
>> "E" and "T" seem to be the most often added bad letters.
>>
>> Lee
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>>