Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3KOS callsign genealogy
Currently held by LESLIE, ROBERT E
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 N3KOS's current licensee, walking backwards.
- Pitzer, Preston XVAgranted 2022-10-12cancelled 2025-05-02
Successor callsigns
Callsigns held now by people who previously held N3KOS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3KOS, oldest first.
- LESLIE, ROBERT E MD2011-07-19 → cancelled 2023-09-26
- Pitzer, Preston X VA2025-05-02 active