Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0ADR callsign genealogy
Currently held by Martini, Frederico
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 K0ADR's current licensee, walking backwards.
- Martini, FredericoWIgranted 2011-10-28cancelled 2011-11-18
Successor callsigns
Callsigns held now by people who previously held K0ADR.
No current licensee on record previously held this callsign.