Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0BSD callsign genealogy
Currently held by Randall, Charles C
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 K0BSD's current licensee, walking backwards.
- Randall, Charles CTXgranted 2017-08-11cancelled 2017-09-01
Successor callsigns
Callsigns held now by people who previously held K0BSD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0BSD, oldest first.
- Rauhauser, Neal R IA2001-04-14 → cancelled 2013-04-16
- Randall, Charles C CO2017-09-01 active