Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC5DSW callsign genealogy
Currently held by HARPER, TIMOTHY A
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 KC5DSW's current licensee, walking backwards.
- Harper, Erik DOKgranted 2011-05-02cancelled 2011-07-06
Successor callsigns
Callsigns held now by people who previously held KC5DSW.
- HARPER, TIMOTHY AOKgranted 2021-05-24
All historical holders
Every license row we've seen with the callsign KC5DSW, oldest first.
- HARPER, TIMOTHY A OK2003-09-17 → cancelled 2011-05-14
- Harper, Erik D OK2011-07-06 → cancelled 2023-07-12