Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR1JZS callsign genealogy
Currently held by McDermott Jr, Robert J
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 KR1JZS's current licensee, walking backwards.
- McDermott Jr, Robert JCAgranted 2017-11-09cancelled 2017-12-02
Successor callsigns
Callsigns held now by people who previously held KR1JZS.
No current licensee on record previously held this callsign.