Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K2JKR callsign genealogy
Currently held by GRAHAM, CHARLES 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 K2JKR's current licensee, walking backwards.
- Friedman, Jacob MVAgranted 2025-02-25cancelled 2025-04-26
Successor callsigns
Callsigns held now by people who previously held K2JKR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K2JKR, oldest first.
- GRAHAM, CHARLES R NJ2005-11-22 → cancelled 2018-02-06
- Friedman, Jacob M VA2025-04-26 active