Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB6DFU callsign genealogy
Currently held by Duffy, Marcelline E
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 WB6DFU's current licensee, walking backwards.
- DUFFY, MARCELLINE ENEgranted 2008-10-31cancelled 2009-08-28
Successor callsigns
Callsigns held now by people who previously held WB6DFU.
No current licensee on record previously held this callsign.