Confidence: Medium · Source: FCC ULS · As of 2026-09-15
KB9HWU callsign genealogy
Currently held by KARLSON, ROBERT J
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 KB9HWU'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 KB9HWU.
- KARLSON, ROBERT JWIgranted 2014-02-27cancelled 2026-03-06