Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WZ0O callsign genealogy
Currently held by TENNANT JR, RICHARD G
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 WZ0O's current licensee, walking backwards.
- Cowell, Bradford PFLgranted 2007-02-26cancelled 2007-10-10
Successor callsigns
Callsigns held now by people who previously held WZ0O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WZ0O, oldest first.
- TENNANT JR, RICHARD G TX1992-11-24 → cancelled 2004-11-25
- COWELL, BRADFORD P FL2017-07-21 active