Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6UDF callsign genealogy
Currently held by Roberts, Justin D
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 W6UDF's current licensee, walking backwards.
- Roberts, Justin DKSgranted 2010-04-19cancelled 2010-05-11
Successor callsigns
Callsigns held now by people who previously held W6UDF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6UDF, oldest first.
- FRANKLIN, FRANCIS E CA1997-07-15 → cancelled 2000-12-24
- Roberts, Justin D WA2020-03-26 active