Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4JWO callsign genealogy
Currently held by Barr, Jack 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 W4JWO's current licensee, walking backwards.
- BARR, JACK CNCgranted 1999-04-01cancelled 2004-10-19
Successor callsigns
Callsigns held now by people who previously held W4JWO.
No current licensee on record previously held this callsign.