Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NU3O callsign genealogy
Currently held by Unger, Christopher 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 NU3O's current licensee, walking backwards.
- unger, Christopher RPAgranted 2020-09-21cancelled 2021-06-07
Successor callsigns
Callsigns held now by people who previously held NU3O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NU3O, oldest first.
- Brookes, Charles E FL2008-11-07 → cancelled 2021-01-30
- Unger, Christopher R PA2021-06-07 active