Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4JPJ callsign genealogy
Currently held by Johnson, 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 K4JPJ's current licensee, walking backwards.
- Johnson, John PFLgranted 2015-04-22cancelled 2022-05-27
Successor callsigns
Callsigns held now by people who previously held K4JPJ.
No current licensee on record previously held this callsign.