uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-14

W9FRG callsign genealogy

Currently held by Lachenmann, Marcel J

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 W9FRG's current licensee, walking backwards.

  1. KC9QDHcancelled
    Local Emergency Field Radio Operating GroupWIgranted 2009-07-06cancelled 2009-08-04

Successor callsigns

Callsigns held now by people who previously held W9FRG.

  1. NA9UIcancelled· E
    Lachenmann, Marcel JWIgranted 2001-07-03cancelled 2001-07-28

All historical holders

Every license row we've seen with the callsign W9FRG, oldest first.

  • Lachenmann, Marcel J WI
    2001-03-13 → cancelled 2001-07-03
  • Local Emergency Field Radio Operating Group WI
    2019-06-18 active
← Back to W9FRG License history →