Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB4IOA callsign genealogy
Currently held by UITERWYK, ROBERT H
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 WB4IOA'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 WB4IOA.
- UITERWYK, ROBERT HPAgranted 1993-11-09cancelled 2000-02-08