Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AG7MM callsign genealogy
Currently held by KUMM, KEITH
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 AG7MM's current licensee, walking backwards.
- McCarthy, Timothy MIDgranted 2020-09-02cancelled 2021-12-11
Successor callsigns
Callsigns held now by people who previously held AG7MM.
- KUMM, KEITHAZgranted 2018-04-07
All historical holders
Every license row we've seen with the callsign AG7MM, oldest first.
- KUMM, KEITH AZ2018-03-13 → cancelled 2018-04-07
- McCarthy, Timothy M ID2021-12-11 active