Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N7DUC callsign genealogy
Currently held by HARDIMAN, PETER 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 N7DUC's current licensee, walking backwards.
- GUSTAFSON, ANDREW JUTgranted 2017-10-10cancelled 2017-11-10
Successor callsigns
Callsigns held now by people who previously held N7DUC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7DUC, oldest first.
- HARDIMAN, PETER J OR2002-10-08 → cancelled 2015-01-06
- GUSTAFSON, ANDREW J UT2017-11-10 active