Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9GRO callsign genealogy
Currently held by CLEMENS, BURTON A
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 N9GRO's current licensee, walking backwards.
- Rankin, Michael CINgranted 2019-09-24cancelled 2026-03-31
Successor callsigns
Callsigns held now by people who previously held N9GRO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9GRO, oldest first.
- CLEMENS, BURTON A IN2007-01-05 → cancelled 2019-03-26
- Rankin, Michael C IN2026-03-31 active