Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB7TSM callsign genealogy
Currently held by NIEDERMEYER, TERRENCE 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 KB7TSM's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KB7TSM.
- NIEDERMEYER, TERRENCE PORgranted 2013-02-05cancelled 2018-09-18