Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4COL callsign genealogy
Currently held by Bradshaw, Donald T
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 KO4COL's current licensee, walking backwards.
- Bradshaw, Donald TNCgranted 2017-08-21cancelled 2017-09-15
Successor callsigns
Callsigns held now by people who previously held KO4COL.
- Bradshaw, Donald TNCgranted 2019-02-16