Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4TRL callsign genealogy
Currently held by Arnold, Gregory L
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 K4TRL's current licensee, walking backwards.
- Arnold, Gregory LFLgranted 2018-11-26cancelled 2019-07-06
Successor callsigns
Callsigns held now by people who previously held K4TRL.
No current licensee on record previously held this callsign.