Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4SZW callsign genealogy
Currently held by SARTIN, RANDALL S
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 K4SZW's current licensee, walking backwards.
- SARTIN, RANDALL STNgranted 2012-12-28cancelled 2017-07-14
Successor callsigns
Callsigns held now by people who previously held K4SZW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4SZW, oldest first.
- DE VAULT SR, WILLIAM J TN2002-09-24 → cancelled 2014-12-23
- SARTIN, RANDALL S TN2017-07-14 active