Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7MSL callsign genealogy
Currently held by Larsen, 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 K7MSL's current licensee, walking backwards.
- Larsen, Mark SWAgranted 2015-10-08cancelled 2015-10-31
Successor callsigns
Callsigns held now by people who previously held K7MSL.
No current licensee on record previously held this callsign.