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

W7CLH callsign genealogy

Currently held by HAMMACK, CHARLES L

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 W7CLH's current licensee, walking backwards.

  1. KA7CLHcancelled· T
    HARBOUR, CARL LORgranted 2018-04-06cancelled 2021-04-27
  2. KI7UUGcancelled· T
    HARBOUR, CARL LORgranted 2018-03-01cancelled 2018-04-06

Successor callsigns

Callsigns held now by people who previously held W7CLH.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W7CLH, oldest first.

  • HAMMACK, CHARLES L MT
    2009-02-11 → cancelled 2021-04-09
  • HARBOUR, CARL L OR
    2021-04-27 active
← Back to W7CLH License history →