Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N7MDF callsign genealogy
Currently held by MAZZARELLA, JOHN A
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 N7MDF's current licensee, walking backwards.
- Farler, Michael DAZgranted 2011-05-03cancelled 2015-12-19
Successor callsigns
Callsigns held now by people who previously held N7MDF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7MDF, oldest first.
- MAZZARELLA, JOHN A WA1998-09-30 → cancelled 2010-10-01
- Farler, Michael D AZ2015-12-19 active