Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WW1F callsign genealogy
Currently held by DI PIETRO SR, LAWRENCE 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 WW1F's current licensee, walking backwards.
- Woodruff, William BWAgranted 2020-09-16cancelled 2023-11-14
Successor callsigns
Callsigns held now by people who previously held WW1F.
- Luthi, Daniel PKSgranted 2021-10-26
All historical holders
Every license row we've seen with the callsign WW1F, oldest first.
- DI PIETRO SR, LAWRENCE C ME2001-09-29 → cancelled 2013-09-18
- Luthi, Daniel P TX2013-10-17 → cancelled 2021-10-26
- Woodruff, William B WA2023-11-14 active