Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WU4B callsign genealogy
Currently held by CLAUSEN, EHLER F
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 WU4B's current licensee, walking backwards.
- MACAULAY, ROBERT CGAgranted 2001-07-19cancelled 2010-04-20
- WB5OOZno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held WU4B.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WU4B, oldest first.
- CLAUSEN, EHLER F FL1998-04-01 → cancelled 2010-04-02
- MACAULAY, ROBERT C GA2020-02-04 active