Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD3K callsign genealogy
Currently held by Barrett, John
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 WD3K's current licensee, walking backwards.
- Barrett, JohnPAgranted 2022-08-06cancelled 2022-09-02
Successor callsigns
Callsigns held now by people who previously held WD3K.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WD3K, oldest first.
- STOCK, WILLIAM A PA2010-06-10 → cancelled 2022-08-09
- Barrett, John PA2022-09-02 active