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

WB0O callsign genealogy

Currently held by Presnell, Michael C

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 WB0O's current licensee, walking backwards.

  1. KA0HQLcancelled· E
    Presnell, Michael CMOgranted 2012-08-14cancelled 2013-04-16
  2. KD0PWMcancelled· G
    Presnell, Michael CMOgranted 2011-11-01cancelled 2012-08-14

Successor callsigns

Callsigns held now by people who previously held WB0O.

  1. KO7SSactive· E
    STRAW, WILLIAM HWAgranted 2021-01-01

All historical holders

Every license row we've seen with the callsign WB0O, oldest first.

  • STRAW, WILLIAM H AZ
    2003-01-30 → cancelled 2011-03-26
  • Presnell, Michael C MO
    2023-01-19 active
← Back to WB0O License history →