Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7KWL callsign genealogy
Currently held by HELM, DONALD D
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 W7KWL's current licensee, walking backwards.
- Low, Kok WAZgranted 2020-08-31cancelled 2020-09-26
Successor callsigns
Callsigns held now by people who previously held W7KWL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7KWL, oldest first.
- HELM, DONALD D AZ2007-07-12 → cancelled 2019-10-08
- Low, Kok W AZ2020-09-26 active