Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6OPM callsign genealogy
Currently held by Piesco, Mark
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 K6OPM's current licensee, walking backwards.
- Piesco, MarkCAgranted 2016-04-22cancelled 2016-05-13
Successor callsigns
Callsigns held now by people who previously held K6OPM.
No current licensee on record previously held this callsign.