Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WF0K callsign genealogy
Currently held by McKnight, Douglas J
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 WF0K's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WF0K.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WF0K, oldest first.
- DE GRAZIO, GEORGE E CO2007-08-28 → cancelled 2019-11-15
- McKnight, Douglas J CO2020-03-03 active