Confidence: Medium · Source: FCC ULS · As of 2026-09-15
WB4YSU callsign genealogy
Currently held by CHRISTIAN AMATEUR RADIO EXCHANGE SERVICE
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 WB4YSU's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held WB4YSU.
- K4UEMexpiredCHRISTIAN AMATEUR RADIO EXCHANGE SERVICETNgranted 2013-11-14cancelled 2026-03-06