Log4OM

I know that regular expressions are a very powerful filter and selection language, However i am not a powerful regular expressions wizard.

But i made an effort to make one for SES (Special event stations) , its far form perfect and i would like to invite anyone to help and fine-tune it.

((SES)|(ses)|(SPECIAL)|(special))|(([A-Z]{2,4})([0-9]{2,4})([A-Z][\s]|[A-Z]{3,6})|([A-Z]{1,4})([0-9]{1,4})[A-Z]{4,6})

Most special event stations are captured, however due to the frequent use of locator coordinates (XX00XX) SES stations using this call-sign format are excluded as this would make a lot of false triggers.

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And while i am at it, i made a small adjustment to the IOTA expression to prevent false positives for call-sign starting with a continent (EU,NA and so)

(AF|EU|AS|OC|NA|SA|AN|af|eu|as|oc|na|sa|an])((-|\s)?)([0-9]{2,4})|((iota)|(IOTA))

Now at least 2 numbers are required before the IOTA flag is triggered , so EU1RUS will no longer trigger the IOTA flag, but EU01 will.

Thanks for the input we will update the IOTA Regex and look at the special event Regex

I wish i was a regular expression guru, then i could probably half the length of the definition below, but i am not.

Some Special Event Stations where missed by the previous version. So now an updated one. Seems to be working quiet well missing only few and also few false positive's.

((SES)|(ses)|(SPECIAL)|(special))|([A-Z]{3,6}[0-9]{1,6}[A-Z]{1,6}\b)|([A-Z]{1,6}[0-9]{3,6}[A-Z]{1,6}\b)|([A-Z]{1,6}[0-9][0-9][A-Z]{3,6}\b)|([A-Z]{1,6}[0-9]{1,6}[A-Z]{4,6}\b)

Wonder if there are any (speed) drawbacks in using such long expressions ?

No performance issues.
each time you write a character on the callsign field a check on 300 regular expressions is made to find the country...

That's nice to hear. Got another question. it seems like only the "DX CALLSIGN" and the "NOTES" fields are routed trough the regular expression engine.

I am unable for example to highlight certain frequency or band or spotter callsign or anything else. As i am also active on VHF i am trying to get these spots highlighted, since they scarce en could be easily overlooked.

A workaround is a simple Propagation filter tough, witch catches spots with propagation information. As they are mainly VHF / UHF spots

This line will highlights any spots with <TR> Tropo, <ES> Sporadic-E, <MS> Meteor Scatter, <AU> Aurora

((<tr>)|(<TR>)|(<es>)|(<ES>)|(<ms>)|(<MS>)|(<au>)|(<AU>))

One could also add <SAT> and or <EME> , that however is not in my field of interest