Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB4OST callsign genealogy
Currently held by HPST Rapid Response Vehicle Club
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 WB4OST's current licensee, walking backwards.
- KM4DZJcancelledHPST Rapid Response Vehicle ClubVAgranted 2014-08-29cancelled 2014-09-30
Successor callsigns
Callsigns held now by people who previously held WB4OST.
No current licensee on record previously held this callsign.