Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1SI callsign genealogy
Currently held by Harris Jr, Hunter C
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 W1SI's current licensee, walking backwards.
- Cunningham, Brandon RAZgranted 2010-08-24cancelled 2018-06-05
Successor callsigns
Callsigns held now by people who previously held W1SI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1SI, oldest first.
- Harris Jr, Hunter C MA2006-02-22 → cancelled 2018-05-16
- Cunningham, Brandon R AZ2018-06-05 active