Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ZOO callsign genealogy
Currently held by Carpenter, Brian J
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 K4ZOO's current licensee, walking backwards.
- Carpenter, Brian JMNgranted 2015-03-09cancelled 2020-03-13
Successor callsigns
Callsigns held now by people who previously held K4ZOO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4ZOO, oldest first.
- VELDRAN, RAYMOND R VA2007-11-16 → cancelled 2020-01-09
- Carpenter, Brian J MN2020-03-13 active