Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1RJK callsign genealogy
Currently held by KAISER, RICHARD 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 W1RJK's current licensee, walking backwards.
- KAISER, RICHARD JFLgranted 2007-10-13cancelled 2009-02-10
Successor callsigns
Callsigns held now by people who previously held W1RJK.
No current licensee on record previously held this callsign.