Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KY4PSD callsign genealogy
Currently held by Allen, Chad 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 KY4PSD's current licensee, walking backwards.
- Allen, Chad WKYgranted 2024-12-17cancelled 2025-01-04
Successor callsigns
Callsigns held now by people who previously held KY4PSD.
All historical holders
Every license row we've seen with the callsign KY4PSD, oldest first.
- DOUGLAS, PATRICK S KY2012-05-22 → cancelled 2013-03-09
- Allen, Chad W KY2025-01-04 → cancelled 2026-01-30