Confidence: Medium · Source: FCC ULS · As of 2026-09-09
W3JB callsign genealogy
Currently held by BIRCH, JOHN K
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 W3JB's current licensee, walking backwards.
- PHILLIPS, SCOTT HTXgranted 2014-10-14cancelled 2015-11-21
Successor callsigns
Callsigns held now by people who previously held W3JB.
- Babb, Joshua AAZgranted 2015-10-02cancelled 2016-06-28
All historical holders
Every license row we've seen with the callsign W3JB, oldest first.
- BIRCH, JOHN K MD2007-04-19 → cancelled 2012-08-17
- Babb, Joshua A AZ2014-08-08 → cancelled 2013-11-02
- PHILLIPS, SCOTT H TX2025-09-11 active