Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1AAD callsign genealogy
Currently held by Griesbach, David
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 K1AAD's current licensee, walking backwards.
- Griesbach, DavidCAgranted 2021-08-06cancelled 2021-10-13
Successor callsigns
Callsigns held now by people who previously held K1AAD.
No current licensee on record previously held this callsign.