Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5DWO callsign genealogy
Currently held by MASON, JAMES R
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 K5DWO's current licensee, walking backwards.
- Owen, David WTXgranted 2017-05-17cancelled 2017-07-15
Successor callsigns
Callsigns held now by people who previously held K5DWO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5DWO, oldest first.
- MASON, JAMES R TX1994-04-19 → cancelled 2006-04-20
- Owen, David W TX2017-07-15 active