Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4DOI callsign genealogy
Currently held by NAHSER, DONALD P
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 K4DOI's current licensee, walking backwards.
- MARSTON, JAMES TGAgranted 2003-05-13cancelled 2003-06-25
Successor callsigns
Callsigns held now by people who previously held K4DOI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4DOI, oldest first.
- NAHSER, DONALD P GA1987-09-08 → cancelled 1999-09-10
- Marston, James T GA2013-04-16 → cancelled 2025-06-26