Confidence: Medium · Source: FCC ULS · As of 2026-09-15
K6DMO callsign genealogy
Currently held by Okada, Derek M
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 K6DMO's current licensee, walking backwards.
- Okada, Derek MCAgranted 2019-11-26cancelled 2019-12-24
Successor callsigns
Callsigns held now by people who previously held K6DMO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6DMO, oldest first.
- LARSON, JOHN F ID2005-03-24 → cancelled 2017-06-20
- Okada, Derek M CA2019-12-24 active