Xact Communication XG2200 Cordless Phone "wave radio instructions" Questions

...radio wave of base unit. At Mfgr website pull-down operator's manual and look for registration instructions. Some sequence of buttons will create a radio signal from base (have handset off base) then ...

...does it do this all the time , or just when certin things are in use, like your blender, microwave, refrigators.. Basicall all eletronic devices emmit electromagnet waves which wil cause ...