Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7SRZ callsign genealogy
Currently held by Tupper, John 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 W7SRZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W7SRZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7SRZ, oldest first.
- NORTHCUTT SR, CHARLES O WA2007-12-11 → cancelled 2020-02-21
- Tupper, John R NV2021-12-21 active