Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9YYC callsign genealogy
Currently held by Swartz, Charles D
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 W9YYC's current licensee, walking backwards.
- Swartz, Charles DILgranted 2010-06-16cancelled 2010-07-31
Successor callsigns
Callsigns held now by people who previously held W9YYC.
No current licensee on record previously held this callsign.