Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3GPT callsign genealogy
Currently held by Trees, Geoffrey P
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 W3GPT's current licensee, walking backwards.
- Trees, Geoffrey PPAgranted 2018-12-04cancelled 2018-12-28
Successor callsigns
Callsigns held now by people who previously held W3GPT.
No current licensee on record previously held this callsign.