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

W9SEC callsign genealogy

Currently held by Sadler, Daron S

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 W9SEC's current licensee, walking backwards.

  1. KD9HBRcancelled· G
    Sadler, Daron SINgranted 2018-09-28cancelled 2021-08-10
  2. N0MSZcancelled· T
    Sadler, Daron SINgranted 2018-04-20cancelled 2018-09-28

Successor callsigns

Callsigns held now by people who previously held W9SEC.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign W9SEC, oldest first.

  • LOB, WILLIAM E FL
    2000-09-22 → cancelled 2012-10-10
  • Sadler, Daron S KY
    2021-08-10 active
← Back to W9SEC License history →