Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K8CTM callsign genealogy
Currently held by Donoghue, Michael P
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 K8CTM's current licensee, walking backwards.
- Donoghue, Michael PINgranted 2014-04-17cancelled 2020-05-27
Successor callsigns
Callsigns held now by people who previously held K8CTM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K8CTM, oldest first.
- HOFMEISTER, RAYMOND A OH1998-03-11 → cancelled 2010-03-12
- Donoghue, Michael P IN2020-05-27 active