Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0MJC callsign genealogy
Currently held by Trumble, Mark 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 K0MJC's current licensee, walking backwards.
- Trumble, Mark SNEgranted 2000-08-15cancelled 2001-05-05
Successor callsigns
Callsigns held now by people who previously held K0MJC.
No current licensee on record previously held this callsign.