Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1WLF callsign genealogy
Currently held by Sprouse, Calvin 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 W1WLF's current licensee, walking backwards.
- Wintland, Phillip WMIgranted 2016-11-02cancelled 2022-04-12
Successor callsigns
Callsigns held now by people who previously held W1WLF.
- Sprouse, Calvin TWAgranted 2020-03-24
All historical holders
Every license row we've seen with the callsign W1WLF, oldest first.
- Sprouse, Calvin T WA2019-06-01 → cancelled 2020-03-24
- Wintland, Phillip W MI2022-04-12 active