Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3DFB callsign genealogy
Currently held by MC GLYNN, ANDREW M
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 N3DFB's current licensee, walking backwards.
- Bobro, David FPAgranted 2016-01-05cancelled 2025-04-22
Successor callsigns
Callsigns held now by people who previously held N3DFB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3DFB, oldest first.
- MC GLYNN, ANDREW M PA2008-04-15 → cancelled 2020-04-16
- Bobro, David F PA2025-04-22 active