Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1RJK callsign genealogy
Currently held by KEEFE, 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 K1RJK's current licensee, walking backwards.
- KEEFE, ROBERT JCAgranted 2009-11-10cancelled 2019-08-31
Successor callsigns
Callsigns held now by people who previously held K1RJK.
No current licensee on record previously held this callsign.