Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3DL callsign genealogy
Currently held by HOPPE, MARTIN O
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 N3DL's current licensee, walking backwards.
- Haniwalt, Timothy WPAgranted 2017-03-15cancelled 2019-02-01
Successor callsigns
Callsigns held now by people who previously held N3DL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3DL, oldest first.
- HOPPE, MARTIN O PA2006-11-14 → cancelled 2018-12-18
- Haniwalt, Timothy W PA2019-02-01 active