Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4DCK callsign genealogy
Currently held by TARPLEY, LOWELL P
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 K4DCK's current licensee, walking backwards.
- DUCKWORTH, JOHN NVAgranted 2014-06-17cancelled 2014-08-09
Successor callsigns
Callsigns held now by people who previously held K4DCK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4DCK, oldest first.
- TARPLEY, LOWELL P GA1989-01-24 → cancelled 2001-01-25
- DUCKWORTH, JOHN N VA2024-07-03 active