Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NN3O callsign genealogy
Currently held by COUNT, WILLIAM R
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 NN3O's current licensee, walking backwards.
- FRIEDMAN, DANIEL EMDgranted 2015-10-06cancelled 2023-09-06
Successor callsigns
Callsigns held now by people who previously held NN3O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NN3O, oldest first.
- COUNT, WILLIAM R CA2011-04-20 → cancelled 2023-07-18
- FRIEDMAN, DANIEL E MD2023-09-06 active