Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF5THM callsign genealogy
Currently held by MARSHALL, MICHAEL G
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 KF5THM's current licensee, walking backwards.
- MARSHALL, MICHAEL GLAgranted 2013-01-07cancelled 2013-01-07
Successor callsigns
Callsigns held now by people who previously held KF5THM.
No current licensee on record previously held this callsign.