This receiver receives signals from the VHF band with earpiece or application in a power stage. The transistor can be the BF494 if we reverse the polarity of the power supply. The shock consists of 50 turns of enameled wire 32 in a 0.5 cm non-core form and the antenna coils have 2 and 4 turns of yarn 16 in the form of 1 cm without a core. The variable can be obtained from an out-of-use FM radio, as well as the output transformer.
