Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5YWB callsign genealogy
Currently held by SWINDLE, DON K
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 K5YWB's current licensee, walking backwards.
- Southwell, Michael JTXgranted 2013-12-13cancelled 2014-01-03
Successor callsigns
Callsigns held now by people who previously held K5YWB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5YWB, oldest first.
- SWINDLE, DON K TX1998-08-12 → cancelled 2010-08-13
- Southwell, Michael J TX2024-01-09 active