Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO4CFH callsign genealogy
Currently held by Hoffman, Charles F
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 KO4CFH's current licensee, walking backwards.
- Haffman, Charles FVAgranted 2018-11-13cancelled 2018-12-04
Successor callsigns
Callsigns held now by people who previously held KO4CFH.
- Hoffman, Charles FVAgranted 2021-06-15