Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB7SDM callsign genealogy
Currently held by SMYTHE, RON
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 KB7SDM's current licensee, walking backwards.
- Binford, Ryan PWAgranted 2021-06-25cancelled 2021-08-10
Successor callsigns
Callsigns held now by people who previously held KB7SDM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB7SDM, oldest first.
- SMYTHE, RON WA2012-10-29 → cancelled 2019-08-14
- Binford, Ryan P WA2021-08-10 active