Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4HSV callsign genealogy
Currently held by CONFEDERATE SIGNAL CORPS
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 K4HSV's current licensee, walking backwards.
- KF4UEIcancelledCONFEDERATE SIGNAL CORPSALgranted 1997-10-02cancelled 2006-11-21
Successor callsigns
Callsigns held now by people who previously held K4HSV.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4HSV, oldest first.
- BIEDERWOLF, HAROLD F FL1987-09-22 → cancelled 1999-09-23
- CONFEDERATE SIGNAL CORPS AL2016-09-27 active