Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4DFV callsign genealogy
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 W4DFV's current licensee, walking backwards.
- Johnson, WilliamTNgranted 2022-02-14cancelled 2024-01-26
Successor callsigns
Callsigns held now by people who previously held W4DFV.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4DFV, oldest first.
- Johnson, William TN2024-01-26 active
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