Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB3HKM callsign genealogy
Currently held by ZIMMERMAN, JOHN 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 KB3HKM's current licensee, walking backwards.
- ZIMMERMAN, JOHN GPAgranted 2002-01-09cancelled 2002-01-10
- KA3ZLNno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KB3HKM.
No current licensee on record previously held this callsign.