Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA1KU callsign genealogy
Currently held by Thompson, 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 KA1KU's current licensee, walking backwards.
- Thompson, Donald DMAgranted 2012-04-27cancelled 2012-08-10
Successor callsigns
Callsigns held now by people who previously held KA1KU.
- Thompson, Donald DNVgranted 2020-12-08