Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB3CNW callsign genealogy
Currently held by GLASSMAN SR, JOHN A
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 KB3CNW'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 KB3CNW.
- Glassman Sr, John AMDgranted 1998-05-04cancelled 2000-08-22