Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB1BC callsign genealogy
Currently held by CONGDON, WILLIAM J
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 KB1BC's current licensee, walking backwards.
- CONGDON, WILLIAM JMEgranted 2008-06-17cancelled 2014-05-13
Successor callsigns
Callsigns held now by people who previously held KB1BC.
No current licensee on record previously held this callsign.