Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9JAR callsign genealogy
Currently held by RIVERDAHL, JACK A
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 K9JAR's current licensee, walking backwards.
- RIVERDAHL, JACK AILgranted 2009-06-22cancelled 2013-11-22
Successor callsigns
Callsigns held now by people who previously held K9JAR.
No current licensee on record previously held this callsign.