Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1EFX callsign genealogy
Currently held by Macpherson, David E
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 K1EFX's current licensee, walking backwards.
- Macpherson, David ETNgranted 2006-04-19cancelled 2006-05-09
Successor callsigns
Callsigns held now by people who previously held K1EFX.
No current licensee on record previously held this callsign.