Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC7CLP callsign genealogy
Currently held by ROSENAU, JOHN A
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 KC7CLP's current licensee, walking backwards.
- Rosenau, John AWAgranted 2019-01-31cancelled 2019-02-20
Successor callsigns
Callsigns held now by people who previously held KC7CLP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC7CLP, oldest first.
- ROSENAU, JOHN A WA1994-05-31 → cancelled 2006-06-01
- Rosenau, John A WA2019-02-20 active