Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KW4XL callsign genealogy
Currently held by VIELBAUM, DAVID A
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 KW4XL's current licensee, walking backwards.
- Vielbaum, David ANCgranted 2016-06-03cancelled 2016-08-26
Successor callsigns
Callsigns held now by people who previously held KW4XL.
No current licensee on record previously held this callsign.