Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7DWH callsign genealogy
Currently held by HORSTMAN, CLARA M
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 W7DWH's current licensee, walking backwards.
- Haymond, David WWAgranted 2025-08-20cancelled 2026-08-11
Successor callsigns
Callsigns held now by people who previously held W7DWH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7DWH, oldest first.
- HORSTMAN, CLARA M WA2013-07-12 → cancelled 2025-04-08
- Haymond, David W WA2026-08-11 active