Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N3LGP callsign genealogy
Currently held by O BIER, MARK J
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 N3LGP's current licensee, walking backwards.
- O Bier, Mark JDEgranted 2013-04-08cancelled 2015-10-06
Successor callsigns
Callsigns held now by people who previously held N3LGP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3LGP, oldest first.
- O BIER, MARK J DE1992-01-07 → cancelled 2004-01-08
- O Bier, Mark J DE2025-11-27 active