Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NI4D callsign genealogy
Currently held by Goodloe, Radford R
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 NI4D's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held NI4D.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NI4D, oldest first.
- Goodloe, Radford R WA2008-01-03 → cancelled 2018-01-06
- Caldwell, Carl H TN2020-01-24 active