Regex or wildcard search for callsigns/spotters

[DocViper666]

On the main page the search (top right) is very "exact" on the callsign. Only exact matches for spotter (DE) or spotted callsign (DX) are returned as result.
I think a regex or wildcard based search would be great in that case.

So searching for all "OE5" callsigns could be like:
Regex:
^OE5
or with wildcards:
OE5*

Same goes for the filter view. Not sure if a "like" sql search would help here.