Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NN3Z callsign genealogy
Currently held by Martin, Millard J
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 NN3Z's current licensee, walking backwards.
- Croad, Gregory JORgranted 2019-06-27cancelled 2019-12-13
Successor callsigns
Callsigns held now by people who previously held NN3Z.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NN3Z, oldest first.
- Martin, Millard J PA2007-08-28 → cancelled 2019-11-20
- Croad, Gregory J OR2019-12-13 active