Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KS7MJS callsign genealogy
Currently held by Swartout, Mark J
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 KS7MJS's current licensee, walking backwards.
- Swartout, Mark JWAgranted 2015-08-08cancelled 2015-11-06
Successor callsigns
Callsigns held now by people who previously held KS7MJS.
No current licensee on record previously held this callsign.