Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB4SL callsign genealogy
Currently held by LEWIS, SCOTT D
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 AB4SL's current licensee, walking backwards.
- Lewis, Scott DNCgranted 2008-02-01cancelled 2013-08-20
Successor callsigns
Callsigns held now by people who previously held AB4SL.
- KASTELBERG, HENRY SNCgranted 2016-10-20