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

AF4SZ callsign genealogy

Currently held by Marsh, Raymond M

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 AF4SZ's current licensee, walking backwards.

  1. KU4ZMcancelled· A
    MARSH, RAYMOND MVAgranted 1999-04-28cancelled 2000-05-11
  2. KF4MUBcancelled· G
    MARSH, RAYMOND Mcancelled 1999-04-28

Successor callsigns

Callsigns held now by people who previously held AF4SZ.

  1. K4MARexpired· E
    Marsh, Raymond MVAgranted 2000-10-31cancelled 2012-11-01
← Back to AF4SZ License history →