Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA7SMB callsign genealogy
Currently held by JOHNSON, DOUGLAS R
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 WA7SMB's current licensee, walking backwards.
- BLACK, SCHYLER MWAgranted 2019-11-20cancelled 2019-12-10
Successor callsigns
Callsigns held now by people who previously held WA7SMB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA7SMB, oldest first.
- JOHNSON, DOUGLAS R CO1998-01-30 → cancelled 2010-02-02
- BLACK, SCHYLER M WA2019-12-10 active