Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3SW callsign genealogy
Currently held by KULP, JAMES D
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 K3SW's current licensee, walking backwards.
- WALTERS, STEPHEN MPAgranted 2015-01-26cancelled 2015-08-25
Successor callsigns
Callsigns held now by people who previously held K3SW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3SW, oldest first.
- KULP, JAMES D VA2010-09-03 → cancelled 2013-08-05
- WALTERS, STEPHEN M PA2025-06-21 active