Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4TMN callsign genealogy
Currently held by Niderost, Thomas 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 K4TMN's current licensee, walking backwards.
- Niderost, Thomas MFLgranted 2001-02-02cancelled 2006-04-08
Successor callsigns
Callsigns held now by people who previously held K4TMN.
No current licensee on record previously held this callsign.