Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC2DIF callsign genealogy
Currently held by OSIER, WILLIAM 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 KC2DIF's current licensee, walking backwards.
- OSIER, WILLIAM Rcancelled 1998-04-03
Successor callsigns
Callsigns held now by people who previously held KC2DIF.
- OSIER, WILLIAM RFLgranted 2019-07-30