Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4BWO callsign genealogy
Currently held by SHERWOOD III, JOHN 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 N4BWO's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held N4BWO.
- SHERWOOD III, JOHN MNCgranted 1998-04-23cancelled 2010-04-24