Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1BZD callsign genealogy
Currently held by Winokur, Jonathan W
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 K1BZD's current licensee, walking backwards.
- Winokur, Jonathan WMAgranted 2016-10-07cancelled 2016-10-25
Successor callsigns
Callsigns held now by people who previously held K1BZD.
- Winokur, Jonathan WRIgranted 2017-06-06cancelled 2019-05-21
All historical holders
Every license row we've seen with the callsign K1BZD, oldest first.
- DOLSON, WALTER J MA1997-10-07 → cancelled 2009-10-08
- Winokur, Jonathan W AK2016-10-25 → cancelled 2017-06-06