Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NJ1D callsign genealogy
Currently held by HERR, DONALD S
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 NJ1D's current licensee, walking backwards.
- TREMBLAY, GERALD FPAgranted 2003-04-29cancelled 2009-02-03
Successor callsigns
Callsigns held now by people who previously held NJ1D.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NJ1D, oldest first.
- HERR, DONALD S MA1997-01-15 → cancelled 2009-01-16
- TREMBLAY, GERALD F PA2018-11-07 active