Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4NGU callsign genealogy
Currently held by Pinckney, Tommy
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 K4NGU's current licensee, walking backwards.
- Pinckney, TommySCgranted 2013-10-17cancelled 2015-01-21
Successor callsigns
Callsigns held now by people who previously held K4NGU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4NGU, oldest first.
- RILEY, JOHN W SC2005-05-19 → cancelled 2013-01-18
- Pinckney, Tommy SC2025-02-05 active