Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6SDO callsign genealogy
Currently held by Anderson, Robert L
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 W6SDO's current licensee, walking backwards.
- Anderson, Robert LCAgranted 2011-09-16cancelled 2012-01-27
Successor callsigns
Callsigns held now by people who previously held W6SDO.
No current licensee on record previously held this callsign.