Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC9GZO callsign genealogy
Currently held by Allison, Jerry W
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 KC9GZO's current licensee, walking backwards.
- Allison, Jerry WINgranted 2004-11-22cancelled 2005-01-04
Successor callsigns
Callsigns held now by people who previously held KC9GZO.
- Allison, Jerry WINgranted 2025-03-12