Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6MJH callsign genealogy
Currently held by HEIL, MARK J
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 K6MJH's current licensee, walking backwards.
- Heil, Mark JCAgranted 2005-12-22cancelled 2006-01-10
Successor callsigns
Callsigns held now by people who previously held K6MJH.
No current licensee on record previously held this callsign.