uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-14

WV3O callsign genealogy

Currently held by GREENBERG, JAY W

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 WV3O's current licensee, walking backwards.

  1. AJ4ERcancelled· E
    Birdwell, James TSCgranted 2007-10-22cancelled 2011-12-16
  2. KJ4ABPcancelled· E
    Birdwell, James TSCgranted 2007-10-22cancelled 2008-01-23

Successor callsigns

Callsigns held now by people who previously held WV3O.

  1. KM8Lactive· E
    Kremer, Joseph WWVgranted 2026-03-25
  2. WW3Qactive· E
    KOHNFELDER, ALBERT RPAgranted 2021-12-18
  3. N3WWLcancelled· E
    GREENBERG, JAY WPAgranted 2018-09-01cancelled 2025-01-17

All historical holders

Every license row we've seen with the callsign WV3O, oldest first.

  • Kremer, Joseph W DE
    2002-08-28 → cancelled 2006-04-11
  • GREENBERG, JAY W PA
    2008-10-15 → cancelled 2008-11-29
  • Birdwell, James T SC
    2021-11-02 active
← Back to WV3O License history →