Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0EFB callsign genealogy
Currently held by SEMADENI, PETER M
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 KC0EFB's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KC0EFB.
- Semadeni, Peter MKSgranted 2008-08-26cancelled 2018-07-06