Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9FDN callsign genealogy
Currently held by LARSEN, RONALD 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 W9FDN's current licensee, walking backwards.
- LARSEN, RONALD RMOgranted 2006-08-22cancelled 2009-04-18
Successor callsigns
Callsigns held now by people who previously held W9FDN.
No current licensee on record previously held this callsign.