Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9FRG callsign genealogy
Currently held by BLACK, RANDY G
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 N9FRG's current licensee, walking backwards.
- KD9PZOcancelledLEFROG Amateur Radio ClubWIgranted 2020-08-06cancelled 2020-08-28
Successor callsigns
Callsigns held now by people who previously held N9FRG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9FRG, oldest first.
- BLACK, RANDY G WI1996-03-20 → cancelled 2008-03-21
- LEFROG Amateur Radio Club WI2020-08-28 active