Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NI4K callsign genealogy
Currently held by BARBER JR, THOMAS L
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 NI4K's current licensee, walking backwards.
- Hartzell, Zachary RGAgranted 2014-10-08cancelled 2023-07-14
Successor callsigns
Callsigns held now by people who previously held NI4K.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NI4K, oldest first.
- BARBER JR, THOMAS L FL2011-04-11 → cancelled 2023-07-12
- Hartzell, Zachary R GA2023-07-14 active