Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3ISR callsign genealogy
Currently held by HANSEN, ALAN S
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 W3ISR's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W3ISR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3ISR, oldest first.
- ALDRICH, C GORDON NY1998-11-19 → cancelled 1999-10-06
- HANSEN, ALAN S DE2019-04-27 active