Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4IHM callsign genealogy
Currently held by Day, Rion G
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 K4IHM's current licensee, walking backwards.
- Day, Rion GNCgranted 2019-05-07
Successor callsigns
Callsigns held now by people who previously held K4IHM.
- Day, Rion GNCgranted 2019-05-07