Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM4BDP callsign genealogy
Currently held by BAUMSTEIN, AVI H
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 KM4BDP'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 KM4BDP.
- BAUMSTEIN, AVI HFLgranted 2026-01-06