Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7OPS callsign genealogy
Currently held by Whimple, Joseph E
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 K7OPS's current licensee, walking backwards.
- Whimple, Joseph ENVgranted 2017-01-24cancelled 2017-02-11
Successor callsigns
Callsigns held now by people who previously held K7OPS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7OPS, oldest first.
- King County Search And Rescue Operations WA2004-04-09 → cancelled 2016-04-12
- Whimple, Joseph E NV2017-02-11 active