Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA4RLL callsign genealogy
Currently held by Ng, Karl
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 KA4RLL's current licensee, walking backwards.
- Ng, KarlFLgranted 2020-10-13cancelled 2020-11-14
Successor callsigns
Callsigns held now by people who previously held KA4RLL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA4RLL, oldest first.
- TANNER, LOLA J SC2007-06-27 → cancelled 2019-09-25
- Ng, Karl FL2020-11-14 active