Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB4JYF callsign genealogy
Currently held by Thomas, Denis 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 WB4JYF's current licensee, walking backwards.
- Thomas, Denis ESCgranted 2018-02-12cancelled 2018-03-06
Successor callsigns
Callsigns held now by people who previously held WB4JYF.
No current licensee on record previously held this callsign.