Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA1WK callsign genealogy
Currently held by KNAPP, WILLIAM M
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by WA1WK's current licensee, walking backwards.
- KNAPP, WILLIAM MCTgranted 2010-05-13cancelled 2015-08-11
Successor callsigns
Callsigns held now by people who previously held WA1WK.
No current licensee on record previously held this callsign.