Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0OOB callsign genealogy
Currently held by Koob, John E
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 K0OOB's current licensee, walking backwards.
- Koob, John ECOgranted 2001-06-13cancelled 2001-08-24
Successor callsigns
Callsigns held now by people who previously held K0OOB.
No current licensee on record previously held this callsign.