Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB5NDJ callsign genealogy
Currently held by KRAWIEC, FRANK S
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 WB5NDJ's current licensee, walking backwards.
- Krawiec Jr, Frank JTXgranted 2014-07-07cancelled 2021-04-17
Successor callsigns
Callsigns held now by people who previously held WB5NDJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB5NDJ, oldest first.
- KRAWIEC, FRANK S TX2008-05-29 → cancelled 2020-08-28
- Krawiec Jr, Frank J TX2021-04-17 active