Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA4MLS callsign genealogy
Currently held by Pennington, Shawn
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 KA4MLS's current licensee, walking backwards.
- Shea, Matthew LKYgranted 2026-07-25cancelled 2026-08-14
Successor callsigns
Callsigns held now by people who previously held KA4MLS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA4MLS, oldest first.
- Pennington, Shawn MD2012-02-17 → cancelled 2024-02-21
- Shea, Matthew L KY2026-08-14 active