Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ7RDF callsign genealogy
Currently held by Fruth, Rudi
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 KJ7RDF's current licensee, walking backwards.
- Fruth, RudiWAgranted 2019-11-21cancelled 2019-12-10
Successor callsigns
Callsigns held now by people who previously held KJ7RDF.
No current licensee on record previously held this callsign.