Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1MJK callsign genealogy
Currently held by Kircos, Marc
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 K1MJK's current licensee, walking backwards.
- Kircos, MarcCAgranted 2017-08-07cancelled 2017-08-25
Successor callsigns
Callsigns held now by people who previously held K1MJK.
No current licensee on record previously held this callsign.