Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NT4J callsign genealogy
Currently held by Marcum, Amy 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 NT4J's current licensee, walking backwards.
- HEDGCOTH, WILLIAM JTNgranted 2013-06-20cancelled 2019-03-05
Successor callsigns
Callsigns held now by people who previously held NT4J.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NT4J, oldest first.
- Marcum, Amy J KY2007-01-08 → cancelled 2019-02-13
- HEDGCOTH, WILLIAM J TN2019-03-05 active