Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ISA callsign genealogy
Currently held by BROWNE, TIMOTHY E
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 K4ISA's current licensee, walking backwards.
- BROWNE, TIMOTHY ETNgranted 2019-05-13cancelled 2019-06-07
Successor callsigns
Callsigns held now by people who previously held K4ISA.
No current licensee on record previously held this callsign.