Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4DZJ 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 KM4DZJ's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KM4DZJ.
- WB4OSTactiveHPST Rapid Response Vehicle ClubVAgranted 2024-08-31