Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7TCO callsign genealogy
Currently held by Humphrey, Christopher J
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 W7TCO's current licensee, walking backwards.
- Humphrey, Christopher JIDgranted 2014-06-12cancelled 2020-04-17
Successor callsigns
Callsigns held now by people who previously held W7TCO.
No current licensee on record previously held this callsign.