Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD6RMT callsign genealogy
Currently held by Ogawa, Calvin H
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 KD6RMT's current licensee, walking backwards.
- Ogawa, Calvin HCAgranted 2016-08-23cancelled 2016-09-10
Successor callsigns
Callsigns held now by people who previously held KD6RMT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD6RMT, oldest first.
- OGAWA, CALVIN H CA2003-11-04 → cancelled 2015-11-05
- Ogawa, Calvin H CA2016-09-10 active