Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0RO callsign genealogy
Currently held by DEKKER, ROBERT O
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 K0RO's current licensee, walking backwards.
- BOLT, RALPH OMSgranted 2006-04-26cancelled 2015-11-24
- N0BHYno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held K0RO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0RO, oldest first.
- DEKKER, ROBERT O NE1997-02-20 → cancelled 2005-10-15
- TRAMPLER, ARTHUR R MO2007-11-03 → cancelled 2013-11-05
- BOLT, RALPH O MS2025-08-28 active