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

WF0B callsign genealogy

Currently held by FRANZEN JR, WILLIAM G

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 WF0B's current licensee, walking backwards.

  1. N0NYHactive· G
    Holman, Natalia YMOgranted 2024-03-01
  2. N0CCPcancelled· G
    Holman, Natalia YMOgranted 2014-10-24cancelled 2024-03-01
  3. KE0BFAcancelled· G
    Martinoli, Natalia YMOgranted 2014-07-09cancelled 2014-10-24

Successor callsigns

Callsigns held now by people who previously held WF0B.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign WF0B, oldest first.

  • Caringer, Ray L MO
    2007-11-14 → cancelled 2020-01-07
  • FRANZEN JR, WILLIAM G MN
    2020-03-07 active
← Back to WF0B License history →