Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4DMU callsign genealogy
Currently held by DALLAS, JOHN F
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 KF4DMU'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 KF4DMU.
- DALLAS, JOHN FGAgranted 2016-05-07cancelled 2021-01-01