Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO1E callsign genealogy
Currently held by VIVEIROS, DAVID
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 KO1E's current licensee, walking backwards.
- VIVEIROS, DAVIDRIgranted 2006-02-08cancelled 2008-03-11
Successor callsigns
Callsigns held now by people who previously held KO1E.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KO1E, oldest first.
- MAXHAM, DAVID L VT1997-10-20 → cancelled 2001-01-10
- VIVEIROS, DAVID RI2018-01-22 active