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

WA7CJM callsign genealogy

Currently held by KOENIG, CLARENCE W

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 WA7CJM's current licensee, walking backwards.

  1. AF7WDcancelled· E
    Martin, Christopher JWAgranted 2016-01-19cancelled 2017-08-04
  2. KF7KJIcancelled· E
    Martin, Christopher JWAgranted 2010-05-27cancelled 2016-01-19

Successor callsigns

Callsigns held now by people who previously held WA7CJM.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign WA7CJM, oldest first.

  • KOENIG, CLARENCE W WA
    1995-01-31 → cancelled 2007-02-01
  • Martin, Christopher J WA
    2017-08-04 active
← Back to WA7CJM License history →