Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1SDA callsign genealogy
Currently held by WISDA, BERNARD J
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 W1SDA's current licensee, walking backwards.
- WISDA, BERNARD JMEgranted 1998-07-20cancelled 2006-03-14
Successor callsigns
Callsigns held now by people who previously held W1SDA.
No current licensee on record previously held this callsign.