Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KN4ZWS callsign genealogy
Currently held by Portch, Charles W
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 KN4ZWS's current licensee, walking backwards.
- Portch, Charles WFLgranted 2019-08-20cancelled 2019-11-14
Successor callsigns
Callsigns held now by people who previously held KN4ZWS.
- Portch, Charles WFLgranted 2019-08-20