Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4OPM callsign genealogy
Currently held by Young, Matthew R
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 K4OPM's current licensee, walking backwards.
- Young, Matthew RFLgranted 2013-02-21cancelled 2013-11-16
Successor callsigns
Callsigns held now by people who previously held K4OPM.
No current licensee on record previously held this callsign.