Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KB1ZDD callsign genealogy
Currently held by Malek, John 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 KB1ZDD's current licensee, walking backwards.
- Malek, John SMAgranted 2012-10-11cancelled 2012-12-31
Successor callsigns
Callsigns held now by people who previously held KB1ZDD.
- Malek, John SMAgranted 2023-12-27