Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3GEO callsign genealogy
Currently held by CRISWELL, GEOFFREY R
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 K3GEO's current licensee, walking backwards.
- CRISWELL, GEOFFREY RGAgranted 2024-10-12cancelled 2025-02-14
Successor callsigns
Callsigns held now by people who previously held K3GEO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3GEO, oldest first.
- McNeill, George CA2007-10-16 → cancelled 2019-10-17
- CRISWELL, GEOFFREY R GA2025-02-14 active