Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7YOY callsign genealogy
Currently held by Swenk, Harold 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 W7YOY's current licensee, walking backwards.
- Swenk, Harold EORgranted 2001-06-26cancelled 2008-11-22
Successor callsigns
Callsigns held now by people who previously held W7YOY.
No current licensee on record previously held this callsign.