Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC7JMK callsign genealogy
Currently held by METCALF, JAMES B
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 KC7JMK's current licensee, walking backwards.
- KLEINMAN, JEFFREY MUTgranted 2025-01-22cancelled 2025-02-25
Successor callsigns
Callsigns held now by people who previously held KC7JMK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC7JMK, oldest first.
- METCALF, JAMES B WA1995-03-15 → cancelled 2007-03-16
- KLEINMAN, JEFFREY M UT2025-02-25 active