Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N3BYU callsign genealogy
Currently held by COOK, TODD V
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 N3BYU's current licensee, walking backwards.
- COOK, TODD VILgranted 2013-11-15cancelled 2014-12-09
Successor callsigns
Callsigns held now by people who previously held N3BYU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3BYU, oldest first.
- WILSON, PHYLLIS R MD2002-03-29 → cancelled 2014-04-22
- COOK, TODD V UT2024-11-23 active