Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK0USA callsign genealogy
Currently held by HOFFMANN, LEO W
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 KK0USA's current licensee, walking backwards.
- HOFFMANN, LEO WKSgranted 2005-08-03cancelled 2014-09-13
Successor callsigns
Callsigns held now by people who previously held KK0USA.
No current licensee on record previously held this callsign.