Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7SDJ callsign genealogy
Currently held by Johnson, Shane D
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 W7SDJ's current licensee, walking backwards.
- Johnson, Shane DWAgranted 2016-04-21cancelled 2016-05-14
Successor callsigns
Callsigns held now by people who previously held W7SDJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7SDJ, oldest first.
- LEWIS, BLAIR S ID1997-10-07 → cancelled 2009-10-08
- Johnson, Shane D WA2026-03-18 active