Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA4YTS callsign genealogy
Currently held by DAVIDSON, JOHN T
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 WA4YTS's current licensee, walking backwards.
- DAVIDSON, JOHN TWAgranted 2016-07-12cancelled 2022-10-04
Successor callsigns
Callsigns held now by people who previously held WA4YTS.
- DAVIDSON, JOHN TWAgranted 2016-07-12cancelled 2022-10-04
All historical holders
Every license row we've seen with the callsign WA4YTS, oldest first.
- DAVIDSON, JOHN T WA2016-07-12 → cancelled 2022-09-02
- DAVIDSON, JOHN T WA2022-10-04 active