Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR6M callsign genealogy
Currently held by Polkinghorn, Michael D
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 KR6M's current licensee, walking backwards.
- Polkinghorn, Michael DCAgranted 2017-06-06cancelled 2026-05-29
- KD6PUDno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KR6M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KR6M, oldest first.
- FINNERAN, KENNA L CA2014-02-19 → cancelled 2026-05-12
- Polkinghorn, Michael D CA2026-05-29 active