Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5ZU callsign genealogy
Currently held by SERRETTE, JOHN 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 K5ZU's current licensee, walking backwards.
- SERRETTE, JOHN CARgranted 1995-11-08cancelled 2000-03-04
Successor callsigns
Callsigns held now by people who previously held K5ZU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5ZU, oldest first.
- SERRETTE, BOBBY G AR1997-03-27 → cancelled 1999-09-15
- SERRETTE, JOHN C AR2020-04-15 active