Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4SOU callsign genealogy
Currently held by Clark, Brian N
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 W4SOU's current licensee, walking backwards.
- Southworth, Spencer WVAgranted 2015-04-16cancelled 2019-03-05
Successor callsigns
Callsigns held now by people who previously held W4SOU.
- Clark, Brian NKYgranted 2020-06-09
All historical holders
Every license row we've seen with the callsign W4SOU, oldest first.
- Clark, Brian N KY2000-09-01 → cancelled 2010-08-13
- Southworth Sr, Spencer W VA2019-03-05 active