Confidence: Medium · Source: FCC ULS · As of 2026-09-09
K9TWR callsign genealogy
Currently held by ROHN EMPLOYEES ARC
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 K9TWR's current licensee, walking backwards.
- KC9ZHGcancelledROHN EMPLOYEES ARCILgranted 2013-07-02cancelled 2013-07-27
Successor callsigns
Callsigns held now by people who previously held K9TWR.
No current licensee on record previously held this callsign.