Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4ARO callsign genealogy
Currently held by SHAW, DONALD B
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 W4ARO's current licensee, walking backwards.
- Osborne, Steven ASCgranted 2014-03-05cancelled 2014-03-25
Successor callsigns
Callsigns held now by people who previously held W4ARO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4ARO, oldest first.
- SHAW, DONALD B FL1998-06-12 → cancelled 2010-06-15
- OSBORNE, STEVEN A MO2025-01-03 active