[Dxspider-support] DX spot filtering
Klaus Heintzenberg
dj6rx at t-online.de
Tue Feb 14 12:23:09 GMT 2006
Hi Dirk.
Thank you for working on the filtering of the callsign field of
the DX spots.
There are some more useless 'callsign strings' to be ignored in
case you like to work on that any more.
1. Number of characters: Minimum 3
2. At least one character MUST be numerical
3. Only characters: A..Z, 0..9 and / NOTHING ELSE
(no !!! no ???? no --- etc 3Y0X? is no callsign)
4. Strings in the callsign field should resemble an amateur radio
callsign
Some bad strings:
12334AB
14DX
DX14
Qxxx any string starting with a Q is no good
As far as I know there is no callsign made of only numbers
or alpha characters
Exemptions:
RAEM
UPOL
(but do they still operate?)
Here is an interesting link specifying Amateur Radio callsigns
http://life.itu.int/radioclub/rr/art19.htm#Section%20III
paragraph 19.5 amateur service
73, Klaus
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