Show dust in sets Is cause of loss in efficiency dust in radio sets Is often the cause of a large loss in efficiency this la Is especially true la in wet weather ber when the dust becomes damp and allowe the feeble radio currents to leak the tha worst places for dust to be allowed to collect Is about binding posts and terminals and between the plates of rotary variable condensers it may be removed from between wires and around tomi terminals nals with a small brush about two inches wide the engineers in laboratories often use pipe clean erg era the same at as used for cleaning the stems of bf ordinary smoking pipes for removing dust from between condenser plates and from other otherwise in accessible places it would b be good practice for the set owner to carefully dust hla his set in this wey we wt y its as often as once a month |