Personal radio station "Signal-401".
Receiving and transmitting radio equipment.Since 1993, the "Signal-401" personal radio station has been produced by the Novosibirsk plant "Electrosignal". The radio station operates in the range of 27.150 ... 27.275 MHz. Modulation type AM. Output power 150 mW. Power supply - three elements A-316. Receiver sensitivity 0.3 μV. Dimensions of the model are 115x60x28 mm, its weight with batteries is 260 g. The radio station provides communication with the same type of model at a distance of up to 5 kilometers within the line of sight. When an external power supply of 7.5 V is connected, the power of the radio station is increased to 350 mW, and the range is up to 10 kilometers. In a populated area, the communication range is reduced by about three times.