Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KS2W callsign genealogy
Currently held by Yu, Yongmao
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 KS2W's current licensee, walking backwards.
- Yu, YongmaoNYgranted 2012-10-31cancelled 2019-02-22
Successor callsigns
Callsigns held now by people who previously held KS2W.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KS2W, oldest first.
- WOLDANSKI, PAUL F NJ2007-05-08 → cancelled 2016-11-29
- Yu, Yongmao PA2019-02-22 active