Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9CJH callsign genealogy
Currently held by HALLBERG, CARL 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 W9CJH's current licensee, walking backwards.
- HALLBERG, CARL JINgranted 2004-07-23cancelled 2005-07-19
Successor callsigns
Callsigns held now by people who previously held W9CJH.
No current licensee on record previously held this callsign.