Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4MDZ callsign genealogy
Currently held by Allen, Denzil E
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 K4MDZ's current licensee, walking backwards.
- Allen, Denzil ETXgranted 2004-02-02cancelled 2004-05-08
- KB2QDNno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held K4MDZ.
No current licensee on record previously held this callsign.