Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N3BDL callsign genealogy
Currently held by KROMER, MARVIN H
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 N3BDL's current licensee, walking backwards.
- Biddle, James JGAgranted 2020-06-11cancelled 2020-06-30
Successor callsigns
Callsigns held now by people who previously held N3BDL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3BDL, oldest first.
- KROMER, MARVIN H PA1995-02-22 → cancelled 2007-02-23
- Biddle, James J GA2020-06-30 active