Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4DBM callsign genealogy
Currently held by MCINTYRE, DEREK B
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 N4DBM's current licensee, walking backwards.
- McIntyre, Derek BNCgranted 1999-10-09cancelled 2006-11-25
Successor callsigns
Callsigns held now by people who previously held N4DBM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4DBM, oldest first.
- COE, ALFRED E NC1994-03-22 → cancelled 2006-03-23
- MCINTYRE, DEREK B NC2016-10-31 active