Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB9ZD callsign genealogy
Currently held by HELMS, KENNETH A
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 AB9ZD's current licensee, walking backwards.
- HELMS, KENNETH AINgranted 2011-02-01cancelled 2011-05-05
Successor callsigns
Callsigns held now by people who previously held AB9ZD.
- HELMS, KENNETH ATNgranted 2019-04-05