Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9HBO callsign genealogy
Currently held by Clark, Douglas E
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 K9HBO's current licensee, walking backwards.
- Clark, Douglas EWIgranted 2014-12-23cancelled 2015-10-16
Successor callsigns
Callsigns held now by people who previously held K9HBO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9HBO, oldest first.
- WOOD SR, JOSEPH W IL1996-08-09 → cancelled 2008-08-12
- Clark, Douglas E WI2025-12-06 active