Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD6AOK callsign genealogy
Currently held by Piper, Michael S
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 KD6AOK's current licensee, walking backwards.
- Piper, Michael SCAgranted 2007-11-26cancelled 2009-10-23
Successor callsigns
Callsigns held now by people who previously held KD6AOK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD6AOK, oldest first.
- DEREMIAH, ROBERT S CA1991-09-03 → cancelled 2003-09-04
- Piper, Michael S CA2019-12-31 active