Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA4DD callsign genealogy
Currently held by SLOAN, ROBERT G
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 WA4DD's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WA4DD.
No current licensee on record previously held this callsign.