Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC7IO callsign genealogy
Currently held by CUMMINS, JAMES 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 KC7IO's current licensee, walking backwards.
- WB7WPNno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KC7IO.
- CUMMINS, JAMES RMTgranted 2020-06-10