Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NI1J callsign genealogy
Currently held by HIRANO, MASARU
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 NI1J's current licensee, walking backwards.
- HIRANO, MASARUHIgranted 2008-08-20cancelled 2008-12-05
Successor callsigns
Callsigns held now by people who previously held NI1J.
- CHIPOKAS, JEFFREY PTNgranted 2022-11-04
All historical holders
Every license row we've seen with the callsign NI1J, oldest first.
- CHIPOKAS, JEFFREY P CT2000-07-04 → cancelled 2002-08-13
- HIRANO, MASARU HI2018-09-17 active