Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KN4TDF callsign genealogy
Currently held by Mills, Joseph 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 KN4TDF's current licensee, walking backwards.
- Mills, Joseph DVAgranted 2019-02-14cancelled 2019-03-05
Successor callsigns
Callsigns held now by people who previously held KN4TDF.
No current licensee on record previously held this callsign.