Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9MUF callsign genealogy
Currently held by Balazs, Mark 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 W9MUF's current licensee, walking backwards.
- BALAZS, MARK EILgranted 1999-12-07cancelled 2001-02-06
Successor callsigns
Callsigns held now by people who previously held W9MUF.
No current licensee on record previously held this callsign.