Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K3JRU callsign genealogy
Currently held by Upson, Jim R
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 K3JRU's current licensee, walking backwards.
- Upson, Jim RDEgranted 2008-07-08cancelled 2008-11-14
Successor callsigns
Callsigns held now by people who previously held K3JRU.
- Upson, Jim RDEgranted 2016-12-02cancelled 2018-01-13