Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7GSW callsign genealogy
Currently held by Waterhouse, Gregory S
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 W7GSW's current licensee, walking backwards.
- Waterhouse, Gregory SIDgranted 2018-08-13cancelled 2019-02-20
Successor callsigns
Callsigns held now by people who previously held W7GSW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7GSW, oldest first.
- HEDRICK, LANGDON C WA2004-05-21 → cancelled 2016-07-15
- Waterhouse, Gregory S ID2019-02-20 active