Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF0DEF callsign genealogy
Currently held by Doug Halbert Memorial Amateur Radio Club
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 KF0DEF's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KF0DEF.
- K0BOYactiveDoug Halbert Memorial Amateur Radio ClubNEgranted 2021-05-25