Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N3RAK callsign genealogy
Currently held by KOENIGSBERG, ROBERT 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 N3RAK's current licensee, walking backwards.
- KOENIGSBERG, ROBERT APAgranted 2015-01-13cancelled 2017-11-14
Successor callsigns
Callsigns held now by people who previously held N3RAK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3RAK, oldest first.
- Cohen, Joel S PA2005-06-24 → cancelled 2017-06-27
- KOENIGSBERG, ROBERT A PA2017-11-14 active