Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9IV callsign genealogy
Currently held by TOSBY, RICHARD T
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 W9IV's current licensee, walking backwards.
- TOSBY, RICHARD TILgranted 2005-12-14cancelled 2009-11-28
Successor callsigns
Callsigns held now by people who previously held W9IV.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9IV, oldest first.
- MC DOUGALL, DUGALD S FL2004-12-23 → cancelled 2007-09-15
- TOSBY, RICHARD T FL2019-09-24 active