Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KH7SD callsign genealogy
Currently held by Zierholz, Kuno
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 KH7SD's current licensee, walking backwards.
- Zierholz, KunoHIgranted 2015-07-10cancelled 2015-10-24
Successor callsigns
Callsigns held now by people who previously held KH7SD.
- AH NEE, GLENN MHIgranted 2009-03-03cancelled 2021-03-20
All historical holders
Every license row we've seen with the callsign KH7SD, oldest first.
- AH NEE, GLENN M HI1999-06-28 → cancelled 2000-12-15
- Zierholz, Kuno HI2025-07-29 active