Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7SGU callsign genealogy
Currently held by SCHILLER, RANDOLPH B
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 W7SGU's current licensee, walking backwards.
- Gunn, SteveWAgranted 2026-03-31cancelled 2026-04-18
Successor callsigns
Callsigns held now by people who previously held W7SGU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7SGU, oldest first.
- SCHILLER, RANDOLPH B UT2013-11-26 → cancelled 2026-03-06
- Gunn, Steve WA2026-04-18 active