Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NV4O callsign genealogy
Currently held by IRBY, FRANCIS 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 NV4O's current licensee, walking backwards.
- LEE JR, JACK GNCgranted 2001-02-20cancelled 2001-05-25
Successor callsigns
Callsigns held now by people who previously held NV4O.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NV4O, oldest first.
- LEE JR, JACK G OK2021-06-23 active
- IRBY, FRANCIS C— → cancelled 1997-12-17