Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF5SRO callsign genealogy
Currently held by Cox, Donald O
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 KF5SRO's current licensee, walking backwards.
- Cox, Donald OARgranted 2012-10-17cancelled 2012-11-13
Successor callsigns
Callsigns held now by people who previously held KF5SRO.
- Cox, Donald OARgranted 2018-04-07