Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K3UO callsign genealogy
Currently held by Microwave Beacon Builders Club
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 K3UO's current licensee, walking backwards.
- KB3KZAcancelledMicrowave Beacon Builders Club - DCDCgranted 2004-03-31cancelled 2004-04-24
Successor callsigns
Callsigns held now by people who previously held K3UO.
No current licensee on record previously held this callsign.