Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC7TMO callsign genealogy
Currently held by HALL, LOGAN 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 KC7TMO's current licensee, walking backwards.
- OBoyle, Christopher KMTgranted 2025-09-18cancelled 2025-12-09
Successor callsigns
Callsigns held now by people who previously held KC7TMO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC7TMO, oldest first.
- HALL, LOGAN M UT2006-09-07 → cancelled 2018-11-28
- OBoyle, Christopher K MT2025-12-09 active