Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7OU callsign genealogy
Currently held by Parr, Jerry 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 K7OU's current licensee, walking backwards.
- Parr, Jerry RAZgranted 2013-06-20cancelled 2015-01-16
Successor callsigns
Callsigns held now by people who previously held K7OU.
- Hiller, David CORgranted 2022-12-08
All historical holders
Every license row we've seen with the callsign K7OU, oldest first.
- HILLER, DAVID C OR2007-02-07 → cancelled 2012-12-27
- Parr, Jerry R AZ2015-01-16 active