Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4MSE callsign genealogy
Currently held by YOW, RAY A
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 K4MSE's current licensee, walking backwards.
- Yow, David ENCgranted 2003-02-27cancelled 2004-07-17
Successor callsigns
Callsigns held now by people who previously held K4MSE.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4MSE, oldest first.
- YOW, RAY A NC1989-07-25 → cancelled 2001-07-26
- Yow, David E NC2024-07-09 active