Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KI4USA callsign genealogy
Currently held by Mellon, Thomas 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 KI4USA's current licensee, walking backwards.
- Lowery, James DMDgranted 2014-04-08cancelled 2015-11-20
Successor callsigns
Callsigns held now by people who previously held KI4USA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KI4USA, oldest first.
- Mellon, Thomas E VA2002-04-10 → cancelled 2014-04-11
- Lowery, James D MD2025-09-25 active