Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9SZR callsign genealogy
Currently held by Spreitzer, James 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 K9SZR's current licensee, walking backwards.
- Spreitzer, James RILgranted 2021-06-28cancelled 2022-03-04
Successor callsigns
Callsigns held now by people who previously held K9SZR.
No current licensee on record previously held this callsign.