Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4BSO callsign genealogy
Currently held by Barber, Michael
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 K4BSO's current licensee, walking backwards.
- Barber, Michael JTNgranted 2016-11-22cancelled 2016-12-10
Successor callsigns
Callsigns held now by people who previously held K4BSO.
No current licensee on record previously held this callsign.