Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC7M callsign genealogy
Currently held by JACOBS, GLENN
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 KC7M's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KC7M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC7M, oldest first.
- JACOBS, GLENN AZ1999-12-09 → cancelled 2012-03-07
- Niemi, William R WA2022-01-07 active