Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5KOB callsign genealogy
Currently held by Kobylarz, William G
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 W5KOB's current licensee, walking backwards.
- Kobylarz, William GNMgranted 2017-08-17cancelled 2017-09-12
Successor callsigns
Callsigns held now by people who previously held W5KOB.
No current licensee on record previously held this callsign.