Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9SGD callsign genealogy
Currently held by CHRISTENSON, DAVID C
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 W9SGD's current licensee, walking backwards.
- CHRISTENSON, DAVID CMIgranted 2001-03-24cancelled 2007-11-24
Successor callsigns
Callsigns held now by people who previously held W9SGD.
No current licensee on record previously held this callsign.