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

K0ISP callsign genealogy

Currently held by JACKSON, JOE

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 K0ISP's current licensee, walking backwards.

  1. K0MDVactive· E
    VOEGELE, MATTHEW DNVgranted 2019-03-05
  2. KI5DFRcancelled· T
    Voegele, Matthew DTXgranted 2019-02-13cancelled 2019-03-05

Successor callsigns

Callsigns held now by people who previously held K0ISP.

  1. K3POTcancelled· T
    JACKSON, JOECOgranted 2014-08-01cancelled 2021-09-21

All historical holders

Every license row we've seen with the callsign K0ISP, oldest first.

  • UBELHOER SR, ROBERT F MN
    1997-07-11 → cancelled 2009-07-14
  • JACKSON, JOE CO
    2012-03-16 → cancelled 2014-08-01
  • VITITOE, MICHAEL D IA
    2016-10-08 active
← Back to K0ISP License history →