Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF4BD callsign genealogy
Currently held by SIPE, MARGARETHA J
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 KF4BD's current licensee, walking backwards.
- BROCK, GARY GNCgranted 2015-12-18cancelled 2020-03-28
Successor callsigns
Callsigns held now by people who previously held KF4BD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF4BD, oldest first.
- SIPE, MARGARETHA J NC1992-08-18 → cancelled 2004-08-19
- BROCK, GARY G NC2020-03-28 active