Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0LEF callsign genealogy
Currently held by Cawthra, Douglas J
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 K0LEF's current licensee, walking backwards.
- Cawthra, Douglas JCOgranted 2010-04-15cancelled 2015-10-23
Successor callsigns
Callsigns held now by people who previously held K0LEF.
No current licensee on record previously held this callsign.