Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4JSB callsign genealogy
Currently held by BUNIN, JEFFREY S
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 K4JSB's current licensee, walking backwards.
- BUNIN, JEFF SFLgranted 1997-02-26cancelled 2006-09-08
Successor callsigns
Callsigns held now by people who previously held K4JSB.
- WILLIFORD JR, WILLIAM HTNgranted 2006-11-22cancelled 2007-10-23