Regular Expression To Match U.S. Amateur Radio Call Signs

A regular expression to match amateur radio call signs in the United States, which contain one or two prefix letters beginning with K, N, W, AA-AL, KA- KZ, NA-NZ or WA-WZ.

/^[AaWaKkNn][a-zA-Z]?[0-9][a-zA-Z]{1,3}$/

Matches:

  • W1AW
  • KL5CDE
  • KN0WCW

Non-matches:

  • WBBM
  • WHAS
  • WBAP

See Also: