Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ4SGE callsign genealogy
Currently held by Rademaker Jr, Charles V
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 KJ4SGE's current licensee, walking backwards.
- Rademaker Jr, Charles VKYgranted 2010-02-10cancelled 2010-02-17
Successor callsigns
Callsigns held now by people who previously held KJ4SGE.
- Rademaker Jr, Charles VKYgranted 2019-05-17