Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KA3ZKU callsign genealogy
Currently held by GEIMAN, ELDON S
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 KA3ZKU's current licensee, walking backwards.
- Brant, Sarah JPAgranted 2026-04-28cancelled 2026-05-16
Successor callsigns
Callsigns held now by people who previously held KA3ZKU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA3ZKU, oldest first.
- GEIMAN, ELDON S PA2011-09-28 → cancelled 2023-12-12
- Brant, Sarah J PA2026-05-16 active