Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC7RYP callsign genealogy
Currently held by COOK, ERIC 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 KC7RYP's current licensee, walking backwards.
- COOK, ERIC RAZgranted 2013-06-18cancelled 2015-05-15
Successor callsigns
Callsigns held now by people who previously held KC7RYP.
- COOK, ERIC RAZgranted 2013-06-18cancelled 2015-05-15
All historical holders
Every license row we've seen with the callsign KC7RYP, oldest first.
- COOK, ERIC R CA1996-07-17 → cancelled 2003-06-17
- COOK, ERIC R AZ2025-12-08 active