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

AD4DZ callsign genealogy

Currently held by Conrad, David E

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 AD4DZ's current licensee, walking backwards.

  1. W9DECcancelled· E
    Conrad, David EFLgranted 2012-10-30cancelled 2015-04-18
  2. KK4LYVcancelled· G
    Conrad, David EFLgranted 2012-10-10cancelled 2012-10-30

Successor callsigns

Callsigns held now by people who previously held AD4DZ.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign AD4DZ, oldest first.

  • HILLARD, PAUL J KY
    1993-05-11 → cancelled 2005-05-12
  • Conrad, David E FL
    2015-04-18 active
← Back to AD4DZ License history →