Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5CMX callsign genealogy
Currently held by LAWRENCE, ROBERT J
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 K5CMX's current licensee, walking backwards.
- WALSH JR, CHARLES MTXgranted 2018-11-16cancelled 2018-12-04
Successor callsigns
Callsigns held now by people who previously held K5CMX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5CMX, oldest first.
- LAWRENCE, ROBERT J TX2000-03-25 → cancelled 2012-04-18
- WALSH JR, CHARLES M TX2018-12-04 active