Currently, "Is equal to" is the default operator for each added filter expression in the Filter component and there is no built-in option to modify it to a different one. 

The only way to achieve this at present is to modify the operator field of each filter expression in the valueChange event of the component:

• https://stackblitz.com/edit/angular-w4xulh-fpqzrr 

Please provide such an option for the Filter component similar to the one available in the Grid's filter row and menu components:

• https://www.telerik.com/kendo-angular-ui/components/grid/filtering/filter-row/#toc-default-filter-operator
• https://www.telerik.com/kendo-angular-ui/components/grid/filtering/filter-menu/#toc-default-filter-operator