Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NG9B callsign genealogy
Currently held by Chulafich, Michael R
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 NG9B's current licensee, walking backwards.
- Chulafich, Michael RWIgranted 2019-05-22cancelled 2019-10-08
Successor callsigns
Callsigns held now by people who previously held NG9B.
- Long, Troy ACOgranted 2017-07-18
All historical holders
Every license row we've seen with the callsign NG9B, oldest first.
- BOWMAN, JOHN R IN2005-03-29 → cancelled 2017-05-27
- Long, Troy A CO2017-06-23 → cancelled 2017-07-18
- Chulafich, Michael R WI2019-10-08 active