Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5CWO callsign genealogy
Currently held by CHASTAIN, MICHAEL K
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 K5CWO's current licensee, walking backwards.
- CHASTAIN, MICHAEL KTXgranted 2012-03-26cancelled 2012-07-20
Successor callsigns
Callsigns held now by people who previously held K5CWO.
- MATA, ROLANDTXgranted 2025-12-16
All historical holders
Every license row we've seen with the callsign K5CWO, oldest first.
- Mata, Roland TX2005-01-08 → cancelled 2006-01-10
- CHASTAIN, MICHAEL K TX2022-04-22 active