Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7IMS callsign genealogy
Currently held by Sumner, Isaac M
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 K7IMS's current licensee, walking backwards.
- Sumner, Isaac MIDgranted 2016-06-09cancelled 2019-09-17
Successor callsigns
Callsigns held now by people who previously held K7IMS.
No current licensee on record previously held this callsign.