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

W1GEO callsign genealogy

Currently held by JOHNS, JEFFREY A

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 W1GEO's current licensee, walking backwards.

  1. KJ7BXHcancelled· G
    Wallace, David MORgranted 2018-11-14cancelled 2018-12-04

Successor callsigns

Callsigns held now by people who previously held W1GEO.

  1. N9CMDcancelled· G
    Brenton, Geoffrey GILgranted 2016-10-07cancelled 2017-07-11
  2. W1ALAcancelled· G
    JOHNS, JEFFREY AALgranted 2007-03-20cancelled 2007-09-05

All historical holders

Every license row we've seen with the callsign W1GEO, oldest first.

  • JOHNS, JEFFREY A AL
    2004-11-27 → cancelled 2007-03-20
  • Brenton, Geoffrey G IL
    2016-07-26 → cancelled 2016-10-07
  • Wallace, David M OR
    2018-12-04 active
← Back to W1GEO License history →