Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4YPW callsign genealogy
Currently held by DILLON, FREDRIC R
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 W4YPW's current licensee, walking backwards.
- DILLON, FREDRIC ROHgranted 2013-02-25cancelled 2013-06-07
Successor callsigns
Callsigns held now by people who previously held W4YPW.
No current licensee on record previously held this callsign.