Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD6GRZ callsign genealogy
Currently held by Zinn, Galen 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 KD6GRZ's current licensee, walking backwards.
- Zinn, Galen RCAgranted 2016-05-02cancelled 2016-06-14
Successor callsigns
Callsigns held now by people who previously held KD6GRZ.
- COUCH, KELLY PCAgranted 2017-03-13
All historical holders
Every license row we've seen with the callsign KD6GRZ, oldest first.
- Couch, Kelly P CA2002-10-05 → cancelled 2007-06-08
- Zinn, Galen R CA2016-06-14 active