Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF7DCW callsign genealogy
Currently held by MATTESON, AMBER L
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 KF7DCW's current licensee, walking backwards.
- Williams Jr, David CAZgranted 2012-08-28cancelled 2021-04-30
Successor callsigns
Callsigns held now by people who previously held KF7DCW.
- MATTESON, AMBER LWAgranted 2019-07-25
All historical holders
Every license row we've seen with the callsign KF7DCW, oldest first.
- MATTESON, AMBER L WA2009-06-09 → cancelled 2009-07-03
- Williams Jr, David C AZ2021-04-30 active