Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD0FX callsign genealogy
Currently held by Phelps, David 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 KD0FX's current licensee, walking backwards.
- Phelps, David RNEgranted 2008-11-12cancelled 2016-01-23
Successor callsigns
Callsigns held now by people who previously held KD0FX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD0FX, oldest first.
- Phelps, David R NE2025-11-29 active
- BOICE, MICHAEL C— → cancelled 1998-02-25