Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4DTZ callsign genealogy
Currently held by MELCHING, ALBERT 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 K4DTZ's current licensee, walking backwards.
- MARTIN, DUSTIN CSCgranted 2007-06-05cancelled 2007-06-23
Successor callsigns
Callsigns held now by people who previously held K4DTZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4DTZ, oldest first.
- MELCHING, ALBERT E FL1992-12-22 → cancelled 2004-12-23
- MARTIN, DUSTIN C NC2017-03-28 active