Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4TOF callsign genealogy
Currently held by Cavanaugh, Jeffrey D
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 W4TOF's current licensee, walking backwards.
- Cavanaugh, Jeffrey DFLgranted 2025-01-22cancelled 2025-02-22
Successor callsigns
Callsigns held now by people who previously held W4TOF.
- Cavanaugh, Jeffrey DFLgranted 2025-04-11