Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1BCM callsign genealogy
Currently held by Castro, Paul
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 K1BCM's current licensee, walking backwards.
- Castro, PaulRIgranted 2017-12-11cancelled 2018-12-14
Successor callsigns
Callsigns held now by people who previously held K1BCM.
No current licensee on record previously held this callsign.