Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KZ5S callsign genealogy
Currently held by JOHNSON, KENNETH O
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 KZ5S's current licensee, walking backwards.
- JOHNSON, KENNETH OTXgranted 1997-11-25cancelled 2007-03-20
Successor callsigns
Callsigns held now by people who previously held KZ5S.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KZ5S, oldest first.
- OLSON, ROY A NM1995-11-20 → cancelled 2006-08-31
- JOHNSON, KENNETH O TX2016-12-28 active