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

WI1O callsign genealogy

Currently held by ERIKSEN, DONALD P

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 WI1O's current licensee, walking backwards.

  1. K1MLRcancelled· E
    Merrill, Robert LNHgranted 2002-08-16cancelled 2010-09-18
  2. KC1HHcancelled· A
    MERRILL, ROBERT LNHgranted 2001-07-14cancelled 2002-08-16
  3. N1DYF
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held WI1O.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign WI1O, oldest first.

  • ERIKSEN, DONALD P MA
    1990-07-17 → cancelled 2002-07-18
  • Merrill, Robert L NH
    2020-06-23 active
← Back to WI1O License history →