Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO0BS callsign genealogy
Currently held by Koob, Robert L
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 KO0BS's current licensee, walking backwards.
- Koob, Robert LCOgranted 2014-02-20cancelled 2015-02-18
Successor callsigns
Callsigns held now by people who previously held KO0BS.
No current licensee on record previously held this callsign.