Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9BCB callsign genealogy
Currently held by CANNON, ROGER D
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 K9BCB's current licensee, walking backwards.
- Block, Brendan CNHgranted 2023-12-23cancelled 2024-02-06
Successor callsigns
Callsigns held now by people who previously held K9BCB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9BCB, oldest first.
- CANNON, ROGER D WI2006-07-14 → cancelled 2018-08-21
- Block, Brendan C NH2024-02-06 active