Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3TOS callsign genealogy
Currently held by SIMILA, PHILLIP O
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 W3TOS's current licensee, walking backwards.
- SIMILA, PHILLIP OWIgranted 2007-03-22cancelled 2008-07-12
Successor callsigns
Callsigns held now by people who previously held W3TOS.
No current licensee on record previously held this callsign.