Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD7I callsign genealogy
Currently held by Helman, David N
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 WD7I's current licensee, walking backwards.
- Helman, David NIAgranted 2011-09-23cancelled 2011-12-06
Successor callsigns
Callsigns held now by people who previously held WD7I.
- MEADOWS, HAROLD JAZgranted 2017-01-04
All historical holders
Every license row we've seen with the callsign WD7I, oldest first.
- IMHOFF, HARVEY J AZ2000-08-08 → cancelled 2009-11-16
- Helman, David N WI2021-09-09 active