Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD5MKZ callsign genealogy
Currently held by MUELLER, GEORGE S
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 KD5MKZ's current licensee, walking backwards.
- MUELLER, GEORGE STXgranted 1996-11-26cancelled 2000-11-30
Successor callsigns
Callsigns held now by people who previously held KD5MKZ.
- MUELLER, GEORGE STXgranted 2020-11-23