Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM4JDW callsign genealogy
Currently held by TWISS, ROBERT G
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 KM4JDW'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 KM4JDW.
- TWISS, ROBERT GNCgranted 2025-03-28