Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4SSW callsign genealogy
Currently held by WILLIAMSON, MICHAEL C
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 K4SSW's current licensee, walking backwards.
- WILLIAMSON, MICHAEL CFLgranted 2010-08-23cancelled 2018-07-03
Successor callsigns
Callsigns held now by people who previously held K4SSW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4SSW, oldest first.
- LOWE, CHARLES L GA2006-01-30 → cancelled 2018-02-08
- WILLIAMSON, MICHAEL C FL2018-07-03 active