Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1FDR callsign genealogy
Currently held by Ravenstein, Bob 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 W1FDR's current licensee, walking backwards.
- RUIZ, FRANK RCAgranted 2024-04-03cancelled 2025-08-19
Successor callsigns
Callsigns held now by people who previously held W1FDR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1FDR, oldest first.
- Ravenstein, Bob J MA2016-03-01 → cancelled 2021-11-29
- RUIZ, FRANK R CA2025-08-19 active