Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0OYW callsign genealogy
Currently held by COLTHARP, LAWRENCE D
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 K0OYW's current licensee, walking backwards.
- COLTHARP, LAWRENCE DKSgranted 2007-03-19cancelled 2015-10-14
Successor callsigns
Callsigns held now by people who previously held K0OYW.
No current licensee on record previously held this callsign.