Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0CU callsign genealogy
Currently held by Humston, Rex A
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 W0CU's current licensee, walking backwards.
- Humston, Rex ACOgranted 2019-08-06cancelled 2019-09-13
Successor callsigns
Callsigns held now by people who previously held W0CU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0CU, oldest first.
- COX, HARLEY FL2007-06-02 → cancelled 2019-08-27
- Humston, Rex A CO2019-09-13 active