Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4DHO callsign genealogy
Currently held by GUTHRIE, GUY 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 N4DHO's current licensee, walking backwards.
- Oakley, DuncanNCgranted 2019-06-21cancelled 2021-12-17
Successor callsigns
Callsigns held now by people who previously held N4DHO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4DHO, oldest first.
- GUTHRIE, GUY R NC1995-04-12 → cancelled 2007-04-13
- Oakley, Duncan NC2021-12-17 active