Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6IWY callsign genealogy
Currently held by LOWRY, WILLIAM H
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 K6IWY's current licensee, walking backwards.
- Yoo, ChangbumCAgranted 2025-11-26cancelled 2026-07-28
Successor callsigns
Callsigns held now by people who previously held K6IWY.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6IWY, oldest first.
- LOWRY, WILLIAM H CA2016-04-07 → cancelled 2024-05-10
- Yoo, Changbum CA2026-07-28 active