Confidence: Medium · Source: FCC ULS · As of 2026-09-09
K3GZO callsign genealogy
Currently held by SHEFFER, GILSON C
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 K3GZO's current licensee, walking backwards.
- SHEFFER, GILSON CPAgranted 2006-04-05cancelled 2013-04-16
Successor callsigns
Callsigns held now by people who previously held K3GZO.
No current licensee on record previously held this callsign.