Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5RTX callsign genealogy
Currently held by REPUBLIC OF TEXAS 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 K5RTX's current licensee, walking backwards.
- Morrison, Michael HTXgranted 2024-12-31cancelled 2025-03-21
Successor callsigns
Callsigns held now by people who previously held K5RTX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5RTX, oldest first.
- REPUBLIC OF TEXAS ARC TX2012-01-21 → cancelled 2024-04-17
- Morrison, Michael H TX2025-03-21 active