Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0FOP callsign genealogy
Currently held by Springer, Jon W
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 K0FOP's current licensee, walking backwards.
- Springer, Jon WWYgranted 2009-12-01cancelled 2010-02-06
Successor callsigns
Callsigns held now by people who previously held K0FOP.
No current licensee on record previously held this callsign.