Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1MWS callsign genealogy
Currently held by Spence, Mark W
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 K1MWS's current licensee, walking backwards.
- Spence, Mark WGAgranted 2023-03-30cancelled 2023-05-13
Successor callsigns
Callsigns held now by people who previously held K1MWS.
No current licensee on record previously held this callsign.