Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC1DUH callsign genealogy
Currently held by Mahoney, John 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 KC1DUH's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KC1DUH.
- Mahoney, John JNHgranted 2025-04-08