Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB4ZQO callsign genealogy
Currently held by BLACKWELL, JOHNNIE M
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 WB4ZQO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WB4ZQO.
No current licensee on record previously held this callsign.