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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

K0JMW callsign genealogy

Currently held by Watterson PhD, James M

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 K0JMW's current licensee, walking backwards.

  1. W7JMWcancelled· E
    WATTERSON, JAMES MMNgranted 2012-08-14cancelled 2021-10-16
  2. KB0RJGcancelled· A
    WATTERSON, JAMES MWAgranted 2004-12-14cancelled 2012-08-14

Successor callsigns

Callsigns held now by people who previously held K0JMW.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K0JMW, oldest first.

  • JOHNSON, OWEN S SD
    2008-12-18 → cancelled 2021-02-12
  • Watterson PhD, James M MN
    2021-10-16 active
← Back to K0JMW License history →