Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4HAT callsign genealogy
Currently held by THOMAS, TERENCE J
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 N4HAT's current licensee, walking backwards.
- WATERHOUSE, JOHN PFLgranted 1999-05-06cancelled 2009-02-07
Successor callsigns
Callsigns held now by people who previously held N4HAT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4HAT, oldest first.
- THOMAS, TERENCE J FL1996-12-30 → cancelled 2008-12-31
- WATERHOUSE, JOHN P WY2018-12-13 active