Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4GEI callsign genealogy
Currently held by Geimer, 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 K4GEI's current licensee, walking backwards.
- Geimer, John PFLgranted 2023-12-06cancelled 2024-05-31
Successor callsigns
Callsigns held now by people who previously held K4GEI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4GEI, oldest first.
- WALKER, DONALD K KY2005-04-14 → cancelled 2017-07-13
- Geimer, John P FL2024-05-31 active