Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD7SOP callsign genealogy
Currently held by MAJOR, JACOB 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 KD7SOP's current licensee, walking backwards.
- MAJOR, JACOB RUTgranted 2017-10-30cancelled 2017-11-18
Successor callsigns
Callsigns held now by people who previously held KD7SOP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD7SOP, oldest first.
- MAJOR, JACOB R UT2002-08-29 → cancelled 2014-08-30
- MAJOR, JACOB R UT2017-11-18 active