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

KL7SB callsign genealogy

Currently held by MAHLA, CURTIS H

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 KL7SB's current licensee, walking backwards.

  1. W7NUTactive
    GENE OAKLEY MEMORIAL STATIONCAgranted 2016-05-18
  2. KE7BUTcancelled
    GENE OAKLEY MEMORIAL STATIONNVgranted 2004-09-22cancelled 2004-10-13

Successor callsigns

Callsigns held now by people who previously held KL7SB.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KL7SB, oldest first.

  • MAHLA, CURTIS H TX
    1988-08-23 → cancelled 2000-08-24
  • Bloom, Stephen H AK
    2022-06-23 active
← Back to KL7SB License history →