Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4JSF callsign genealogy
Currently held by FERGUSON, JAMEY 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 K4JSF's current licensee, walking backwards.
- FERGUSON, JAMEY STNgranted 2008-10-24cancelled 2009-05-29
Successor callsigns
Callsigns held now by people who previously held K4JSF.
No current licensee on record previously held this callsign.