Confidence: Medium · Source: FCC ULS · As of 2026-09-15
W4NOB callsign genealogy
Currently held by Tomlin, James M
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 W4NOB's current licensee, walking backwards.
- Tomlin, James MGAgranted 2014-03-27cancelled 2014-04-22
Successor callsigns
Callsigns held now by people who previously held W4NOB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4NOB, oldest first.
- HALPERN, LOUIS AZ1992-09-01 → cancelled 2004-09-02
- Tomlin, James M GA2014-04-22 → cancelled 2026-04-23