Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC1MKR callsign genealogy
Currently held by RIEHL, MATTHEW K
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 KC1MKR's current licensee, walking backwards.
- RIEHL, MATTHEW KMOgranted 2011-11-14cancelled 2011-12-03
Successor callsigns
Callsigns held now by people who previously held KC1MKR.
No current licensee on record previously held this callsign.