Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7YX callsign genealogy
Currently held by FIELD, JOHN C
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 W7YX's current licensee, walking backwards.
- Jensen, John CWAgranted 2005-06-21cancelled 2006-01-10
Successor callsigns
Callsigns held now by people who previously held W7YX.
- FEUERSTEIN, MARTIN JWAgranted 2023-08-29
All historical holders
Every license row we've seen with the callsign W7YX, oldest first.
- FIELD, JOHN C IN1991-09-10 → cancelled 1999-04-18
- FEUERSTEIN, MARTIN J WA2002-07-20 → cancelled 2003-11-18
- JENSEN, JOHN C WA2025-11-27 active