uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

W7AI callsign genealogy

Currently held by Oro Valley Amateur Radio Club

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 W7AI's current licensee, walking backwards.

  1. W0HFactive· E
    MACLACHLAN, Duncan PKSgranted 2017-10-06
  2. KU0DMcancelled· E
    MACLACHLAN, DUNCAN PKSgranted 2017-04-20cancelled 2017-10-06
  3. KC0VVUcancelled· E
    MACLACHLAN, DUNCAN PKSgranted 2006-02-06cancelled 2007-07-17

Successor callsigns

Callsigns held now by people who previously held W7AI.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W7AI, oldest first.

  • WALTHER, RONALD H AZ
    2006-08-16 → cancelled 2015-07-19
  • Oro Valley Amateur Radio Club AZ
    2025-08-19 active
← Back to W7AI License history →