Ham radio call sign and prefix lists

 Ham radio call signs start with prefixes that indicate which country issued
 their license. The country files are listings of these prefixes together with
 exceptions for use in logging software. The Super Check Partial database files
 provide a list of call signs used by active contesters.
 .
 Contained files:
  * cty.csv, cty.dat ("bigcty" from country-files.com)
  * MASTER.SCP (from supercheckpartial.com)
  * WAG_call_history.txt (from www.dk9tn.de/downloads.php)