Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR4FSU callsign genealogy
Currently held by Cunningham, Hugh K
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 KR4FSU's current licensee, walking backwards.
- Cunningham, Hugh KALgranted 2008-09-02cancelled 2008-10-07
Successor callsigns
Callsigns held now by people who previously held KR4FSU.
No current licensee on record previously held this callsign.