Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9SKY callsign genealogy
Currently held by PROESEL, RUSSELL J
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 N9SKY's current licensee, walking backwards.
- St Christopher, Brett SWIgranted 2025-03-12cancelled 2025-04-01
Successor callsigns
Callsigns held now by people who previously held N9SKY.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9SKY, oldest first.
- PROESEL, RUSSELL J IL2012-12-06 → cancelled 2025-02-25
- St.Christopher, Brett S WI2025-04-01 active