Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK7DFO callsign genealogy
Currently held by Blackwell, Peter G
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 KK7DFO's current licensee, walking backwards.
- Blackwell, PeterWAgranted 2022-02-18cancelled 2022-03-08
Successor callsigns
Callsigns held now by people who previously held KK7DFO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KK7DFO, oldest first.
- Blackwell, Peter G WA2022-01-28 → cancelled 2022-02-16
- Blackwell, Peter WA2022-03-08 active