Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4JPF callsign genealogy
Currently held by Finn, John P
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 K4JPF's current licensee, walking backwards.
- Finn, John PFLgranted 2000-09-07cancelled 2000-10-06
Successor callsigns
Callsigns held now by people who previously held K4JPF.
No current licensee on record previously held this callsign.