Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3MSK callsign genealogy
Currently held by Kniesly, 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 K3MSK's current licensee, walking backwards.
- Kniesly, Mark SPAgranted 2022-11-16cancelled 2022-12-28
Successor callsigns
Callsigns held now by people who previously held K3MSK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3MSK, oldest first.
- TRAPUZZANO, PETER J PA1995-10-27 → cancelled 2007-10-30
- Kniesly, Mark S PA2022-12-28 active