Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5ZOO callsign genealogy
Currently held by CLOUSER, MARSHALL E
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 K5ZOO's current licensee, walking backwards.
- WELANDER, KEVIN ENMgranted 2018-08-17cancelled 2018-09-07
Successor callsigns
Callsigns held now by people who previously held K5ZOO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5ZOO, oldest first.
- CLOUSER, MARSHALL E TX2006-02-28 → cancelled 2018-02-17
- WELANDER, KEVIN E NM2018-09-07 active