Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1DXX callsign genealogy
Currently held by Campbell, David A
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 W1DXX's current licensee, walking backwards.
- Martin, Sheila AMEgranted 2018-03-12cancelled 2018-05-15
Successor callsigns
Callsigns held now by people who previously held W1DXX.
- Campbell, David ANHgranted 2026-09-02
All historical holders
Every license row we've seen with the callsign W1DXX, oldest first.
- Campbell, David A NH2008-06-03 → cancelled 2016-03-11
- Martin, Sheila A ME2018-05-15 active