Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W8IO callsign genealogy
Currently held by Allen, Robert E
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 W8IO's current licensee, walking backwards.
- COX, ROGER AMIgranted 2007-02-06cancelled 2014-05-20
Successor callsigns
Callsigns held now by people who previously held W8IO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W8IO, oldest first.
- Allen, Robert E OH2008-04-01 → cancelled 2012-04-29
- COX, ROGER A MI2024-03-09 active