Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7DLC callsign genealogy
Currently held by CASWELL, DEBORAH 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 K7DLC's current licensee, walking backwards.
- Costenbader, Diane LWAgranted 2011-06-20cancelled 2013-09-24
Successor callsigns
Callsigns held now by people who previously held K7DLC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7DLC, oldest first.
- CASWELL, DEBORAH L CA2001-07-27 → cancelled 2013-07-30
- Costenbader, Diane L WA2023-07-22 active