Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3LU callsign genealogy
Currently held by ABRAMSON, ISADORE
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 W3LU's current licensee, walking backwards.
- KOCH SR, WILLIAM IMDgranted 2001-01-20cancelled 2007-09-15
- KA3JTYno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held W3LU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3LU, oldest first.
- ABRAMSON, ISADORE PA2001-03-02 → cancelled 2002-02-15
- Koch Sr., William I MD2017-07-21 active