Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N0BYO callsign genealogy
Currently held by Daigle, James A
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 N0BYO's current licensee, walking backwards.
- Daigle, James AMEgranted 2017-11-28cancelled 2020-05-15
Successor callsigns
Callsigns held now by people who previously held N0BYO.
- CASTRODALE, DANIEL OMNgranted 2017-03-20
All historical holders
Every license row we've seen with the callsign N0BYO, oldest first.
- CASTRODALE, DANIEL O MN2007-03-26 → cancelled 2017-03-20
- Daigle, James A ME2020-05-15 active