Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4AOS callsign genealogy
Currently held by Chaloupka, Andrew
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 N4AOS's current licensee, walking backwards.
- Chaloupka, Andrew CSCgranted 2010-03-18cancelled 2016-07-29
Successor callsigns
Callsigns held now by people who previously held N4AOS.
No current licensee on record previously held this callsign.