Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO3DUS callsign genealogy
Currently held by Lairson, 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 KO3DUS's current licensee, walking backwards.
- Lairson, Robert JMDgranted 2023-08-22cancelled 2023-09-09
Successor callsigns
Callsigns held now by people who previously held KO3DUS.
No current licensee on record previously held this callsign.