Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WH6SY callsign genealogy
Currently held by Young, Mark
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 WH6SY's current licensee, walking backwards.
- Young, MarkHIgranted 2016-11-16cancelled 2016-12-30
Successor callsigns
Callsigns held now by people who previously held WH6SY.
- Young, MarkHIgranted 2022-10-04
All historical holders
Every license row we've seen with the callsign WH6SY, oldest first.
- NOONAN, MARY JO HI1995-03-08 → cancelled 2006-03-09
- Young, Mark HI2016-12-30 → cancelled 2022-10-04