Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9TIV callsign genealogy
Currently held by TRIMBLE IV, MASON H
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 K9TIV's current licensee, walking backwards.
- TRIMBLE IV, MASON HILgranted 2016-10-27cancelled 2016-11-15
Successor callsigns
Callsigns held now by people who previously held K9TIV.
- TRIMBLE IV, MASON HILgranted 2021-07-09