Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4KPT callsign genealogy
Currently held by SLOUGH, DOUGLAS E
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 K4KPT's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4KPT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4KPT, oldest first.
- SLOUGH, DOUGLAS E VA2005-03-10 → cancelled 2017-06-01
- Haines III, Harry W TN2017-10-24 active