Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4JPG callsign genealogy
Currently held by Gunderson Jr, 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 K4JPG's current licensee, walking backwards.
- Gallagher, JimTNgranted 2013-03-20cancelled 2013-04-09
Successor callsigns
Callsigns held now by people who previously held K4JPG.
- Gunderson Jr, John PSCgranted 2020-01-18
All historical holders
Every license row we've seen with the callsign K4JPG, oldest first.
- Gunderson Jr, John P SC2007-05-15 → cancelled 2010-03-16
- Gallagher, Jim TN2023-03-08 active