Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK4YBD callsign genealogy
Currently held by HAVRILAK, GREGORY 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 KK4YBD's current licensee, walking backwards.
- HAVRILAK, GREGORY CVAgranted 2013-02-05cancelled 2014-02-10
Successor callsigns
Callsigns held now by people who previously held KK4YBD.
No current licensee on record previously held this callsign.