Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO7SHR callsign genealogy
Currently held by Blau, Larry
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 KO7SHR's current licensee, walking backwards.
- Blau, LarryAZgranted 2018-08-06cancelled 2018-08-28
Successor callsigns
Callsigns held now by people who previously held KO7SHR.
No current licensee on record previously held this callsign.