Confidence: Medium · Source: FCC ULS · As of 2026-09-15
K2AAO callsign genealogy
Currently held by Tong, Chi Ming
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 K2AAO's current licensee, walking backwards.
- Tong, Chi MingNYgranted 2026-07-01cancelled 2026-07-21
Successor callsigns
Callsigns held now by people who previously held K2AAO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K2AAO, oldest first.
- GREENE, RAYMOND NY2011-11-29 → cancelled 2024-02-21
- Tong, Chi Ming NY2026-07-21 active