Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4HO callsign genealogy
Currently held by Sims, David
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 W4HO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W4HO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4HO, oldest first.
- CRAFT, JOHN H VA2016-09-21 → cancelled 2023-04-16
- Sims, David CO2025-05-06 active