Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7JRK callsign genealogy
Currently held by Kopenhefer, Jacob 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 K7JRK's current licensee, walking backwards.
- Kopenhefer, Jacob RUTgranted 2011-12-16cancelled 2012-10-23
Successor callsigns
Callsigns held now by people who previously held K7JRK.
No current licensee on record previously held this callsign.