Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KA9QKD callsign genealogy
Currently held by NIELING, THOMAS J
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 KA9QKD's current licensee, walking backwards.
- NIELING, THOMAS JWIgranted 2016-04-19cancelled 2019-02-01
Successor callsigns
Callsigns held now by people who previously held KA9QKD.
- NIELING, THOMAS JWIgranted 2016-04-19cancelled 2019-02-01
All historical holders
Every license row we've seen with the callsign KA9QKD, oldest first.
- NIELING, THOMAS J WI2011-07-19 → cancelled 2016-04-19
- NIELING, THOMAS J WI2019-02-01 active