Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5ISO callsign genealogy
Currently held by Clark, Brian
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 K5ISO's current licensee, walking backwards.
- Clark, Brian DARgranted 2015-02-04cancelled 2015-03-13
Successor callsigns
Callsigns held now by people who previously held K5ISO.
No current licensee on record previously held this callsign.