Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4OSU callsign genealogy
Currently held by REEDY, DENNIS L
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 K4OSU's current licensee, walking backwards.
- REEDY, DENNIS LTNgranted 2001-02-15cancelled 2006-07-11
Successor callsigns
Callsigns held now by people who previously held K4OSU.
No current licensee on record previously held this callsign.