Show hints for amateurs who build own sets in any circuit where one side of the condenser Is connected to the ground it Is best to ground the rotating plates thus doing away with some of the hand capacity effects i for real DX work it foot antenna with a series variable condenser works very well although this Is not as selective as a shorter one surprising results will v be experienced for long distance reception ns as well as local audibility tills this Is an old amateur stunt in wiring a receiver set nil all connecting wires should be short direct and well veil spaced from each other wire used for winding inductance coll coil should have as little in insulation s ul a tio it immediately surrounding the wire as possible tills this adds to the distributing capacity of ho ahn coil oil and results in loss lois of power and audibility it Is worth while to use 11 dead end switches for disconnecting tile the major part of the coll coil when not in use why waste power by having the unused portion in the circuit for clearer reception use a 0 battery in each step of amplification tills will double the life of the U B battery as the ahe plate will only draw drar about halt half when mien it 11 0 battery Is connected in the circuit |