Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9FOP callsign genealogy
Currently held by VANDYKE, WILLIAM 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 K9FOP's current licensee, walking backwards.
- VANDYKE, WILLIAM JTNgranted 2013-12-10cancelled 2018-03-23
Successor callsigns
Callsigns held now by people who previously held K9FOP.
No current licensee on record previously held this callsign.