Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1KYD callsign genealogy
Currently held by ZAKRZEWSKI SR, PETER F
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 W1KYD's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W1KYD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1KYD, oldest first.
- ZAKRZEWSKI SR, PETER F CT1997-11-14 → cancelled 2002-03-16
- ZAKRZEWSKI, JASON K CT2022-08-23 active