Confidence: Medium · Source: FCC ULS · As of 2026-09-10
N3OBF callsign genealogy
Currently held by FREY JR, LESTER C
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 N3OBF's current licensee, walking backwards.
- FREY JR, LESTER CAZgranted 2023-09-07cancelled 2026-08-21
Successor callsigns
Callsigns held now by people who previously held N3OBF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3OBF, oldest first.
- MARTIN, ROGER L PA2004-03-17 → cancelled 2016-05-25
- FREY JR, LESTER C AZ2026-08-21 active