Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NN5J callsign genealogy
Currently held by SYKORA, LEN
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 NN5J's current licensee, walking backwards.
- KD5UAHcancelledGaither Mountain Contest ClubARgranted 2002-10-07cancelled 2003-02-22
Successor callsigns
Callsigns held now by people who previously held NN5J.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NN5J, oldest first.
- SYKORA, LEN TX1996-02-15 → cancelled 2000-08-29
- Gaither Mountain Contest Club AR2022-12-22 active