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

AG4OS callsign genealogy

Currently held by MC KAY, RICHARD L

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 AG4OS's current licensee, walking backwards.

  1. AF4UAcancelled· E
    MC KAY, RICHARD LALgranted 2002-01-23cancelled 2002-02-15
  2. KE0QJcancelled· A
    MC KAY, RICHARD LALgranted 1997-10-08cancelled 2000-05-18

Successor callsigns

Callsigns held now by people who previously held AG4OS.

No current licensee on record previously held this callsign.

← Back to AG4OS License history →