Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC7TAI callsign genealogy
Currently held by NIEHAUS, JOHN R
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 KC7TAI's current licensee, walking backwards.
- NIEHAUS, JOHN RAZgranted 2016-07-26
Successor callsigns
Callsigns held now by people who previously held KC7TAI.
- NIEHAUS, JOHN RAZgranted 2016-07-26