Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7IMU callsign genealogy
Currently held by HALL III, ARTHUR A
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 W7IMU's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W7IMU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7IMU, oldest first.
- CALDWELL, WILBUR H OR1988-10-18 → cancelled 2000-10-19
- HALL III, ARTHUR A WA2024-07-24 active