Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N0ISQ callsign genealogy
Currently held by GELHAYE, DOUGLAS 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 N0ISQ's current licensee, walking backwards.
- Gelhaye, BrentonMNgranted 2013-11-05cancelled 2021-11-05
Successor callsigns
Callsigns held now by people who previously held N0ISQ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0ISQ, oldest first.
- GELHAYE, DOUGLAS R MN1997-12-10 → cancelled 2009-12-11
- Gelhaye, Brenton D MN2021-11-05 active