Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9EBJ callsign genealogy
Currently held by Kalkhoff, William W
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 W9EBJ's current licensee, walking backwards.
- Kalkhoff, William WOHgranted 2020-08-27cancelled 2020-09-15
Successor callsigns
Callsigns held now by people who previously held W9EBJ.
No current licensee on record previously held this callsign.