Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN4SZB 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 KN4SZB'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 KN4SZB.
- WITHROW, JAMES BNCgranted 2019-04-30cancelled 2019-08-06