Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9CB callsign genealogy
Currently held by BECKERS, CARL 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 K9CB's current licensee, walking backwards.
- Spangler, John PWIgranted 2007-06-12cancelled 2008-05-24
Successor callsigns
Callsigns held now by people who previously held K9CB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9CB, oldest first.
- BECKERS, CARL B MD1999-03-02 → cancelled 2006-04-30
- Spangler, John P WI2018-02-27 active