Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1DUP callsign genealogy
Currently held by CAMPBELL, RICHARD 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 W1DUP's current licensee, walking backwards.
- CAMPBELL, RICHARD SCTgranted 2017-11-17cancelled 2017-12-19
Successor callsigns
Callsigns held now by people who previously held W1DUP.
No current licensee on record previously held this callsign.