Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WM4BW callsign genealogy
Currently held by WITHROW, JAMES B
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 WM4BW's current licensee, walking backwards.
- WITHROW, JAMES BNCgranted 2019-03-11cancelled 2019-04-30
Successor callsigns
Callsigns held now by people who previously held WM4BW.
- WITHROW, JAMES BNCgranted 2019-08-06