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Confidence: Medium · Source: FCC ULS · As of 2026-09-12

KB1EF callsign genealogy

Currently held by PERSSON JR, OTTO F

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 KB1EF's current licensee, walking backwards.

  1. W7ERFactive· G
    Wyman, Jessup HWYgranted 2023-02-04
  2. KK7GJScancelled· G
    Wyman, Jessup HWYgranted 2022-05-27cancelled 2023-02-04

Successor callsigns

Callsigns held now by people who previously held KB1EF.

  1. WU1Gactive· E
    Franz, Edgar RMEgranted 2022-10-12
  2. W7ERFcancelled· E
    Franz, Edgar RMEgranted 2017-09-19cancelled 2020-10-09

All historical holders

Every license row we've seen with the callsign KB1EF, oldest first.

  • PERSSON JR, OTTO F MA
    1987-11-17 → cancelled 1999-11-18
  • Franz, Edgar R ME
    2017-03-14 → cancelled 2017-09-19
  • Franz, Edgar R ME
    2020-10-09 → cancelled 2022-10-12
← Back to KB1EF License history →