Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4JSO callsign genealogy
Currently held by FERRIS, DONALD R
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 W4JSO's current licensee, walking backwards.
- FERRIS, DONALD RFLgranted 1995-03-29cancelled 2001-03-06
Successor callsigns
Callsigns held now by people who previously held W4JSO.
No current licensee on record previously held this callsign.