Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7ZRO callsign genealogy
Currently held by Madrona Radio Club
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 K7ZRO's current licensee, walking backwards.
- Connor, Rocky JWAgranted 2013-12-27cancelled 2017-10-31
Successor callsigns
Callsigns held now by people who previously held K7ZRO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7ZRO, oldest first.
- Madrona Radio Club OR2005-08-09 → cancelled 2017-08-10
- Connor, Rocky J WA2017-10-31 active