Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF4JQP callsign genealogy
Currently held by KELLER, JAMES E
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 KF4JQP's current licensee, walking backwards.
- Keller, James EALgranted 2008-02-07cancelled 2008-03-01
Successor callsigns
Callsigns held now by people who previously held KF4JQP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF4JQP, oldest first.
- KELLER, JAMES E AL1998-12-02 → cancelled 1999-10-07
- Keller, James E AL2018-01-06 active