Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3YR callsign genealogy
Currently held by STUYVESANT, MARY C
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 K3YR's current licensee, walking backwards.
- WOLFSON, HERBERT SPAgranted 2019-06-14cancelled 2019-09-17
Successor callsigns
Callsigns held now by people who previously held K3YR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3YR, oldest first.
- STUYVESANT, MARY C PA2007-05-11 → cancelled 2019-08-07
- WOLFSON, HERBERT S PA2019-09-17 active