Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6OOH callsign genealogy
Currently held by Klos, Karl N
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 W6OOH's current licensee, walking backwards.
- Klos, Karl NCOgranted 2007-02-08cancelled 2007-02-27
Successor callsigns
Callsigns held now by people who previously held W6OOH.
No current licensee on record previously held this callsign.