Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4MPL callsign genealogy
Currently held by SUTTER, WILLIAM K
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 W4MPL's current licensee, walking backwards.
- Linthicum Sr, MichaelFLgranted 2012-12-12cancelled 2013-04-30
Successor callsigns
Callsigns held now by people who previously held W4MPL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MPL, oldest first.
- SUTTER, WILLIAM K VA1995-10-24 → cancelled 2007-10-25
- Linthicum Sr, Michael TN2023-03-21 active