Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N1CHN callsign genealogy
Currently held by Bubar, Harold B
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 N1CHN's current licensee, walking backwards.
- SREEKANTASWAMY, NICHIN KAZgranted 2020-09-04cancelled 2020-10-06
Successor callsigns
Callsigns held now by people who previously held N1CHN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1CHN, oldest first.
- Bubar, Harold B ME2006-12-28 → cancelled 2019-02-12
- SREEKANTASWAMY, NICHIN K CA2020-10-06 active