Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO1U callsign genealogy
Currently held by Burgess, Mark 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 KO1U's current licensee, walking backwards.
- Burgess, Mark AMAgranted 2002-03-20cancelled 2003-08-02
Successor callsigns
Callsigns held now by people who previously held KO1U.
No current licensee on record previously held this callsign.