Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC5KMC callsign genealogy
Currently held by SUTPHIN, JAMES F
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 KC5KMC's current licensee, walking backwards.
- COOK, KRISTOPHER MTXgranted 2012-04-13cancelled 2019-02-20
Successor callsigns
Callsigns held now by people who previously held KC5KMC.
- SUTPHIN, JAMES FTXgranted 2024-08-17
All historical holders
Every license row we've seen with the callsign KC5KMC, oldest first.
- SUTPHIN, JAMES F TX2004-07-29 → cancelled 2004-09-10
- COOK, KRISTOPHER M TX2019-02-20 active