5pcs 315MHZ/433MHZ Black Rubber Spiral Spring Antenna for Wireless Receiving and Transmitting Remote Control Module

5pcs 315MHZ/433MHZ Black Rubber Spiral Spring Antenna for Wireless Receiving and Transmitting Remote Control Module
sku: 1870686
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$1.69
Shipping from: China
   Description
Description The antenna is a kind of converter that transforms the guided wave propagating on the transmission line into an electromagnetic wave propagating in an unbounded medium usually free space or vice versa A component used in radio equipment to transmit or receive electromagnetic waves Engineering systems such as radio communications broadcasting navigation electronic countermeasures remote sensing and radio astronomy which use electromagnetic waves to transmit information rely on antennas to work In addition in the use of electromagnetic waves to transmit energy non signal energy radiation also requires an antenna General antennas are reversible that is the same antenna can be used as both a transmitting antenna and a receiving antenna The basic characteristic parameters of the same antenna as transmitting or receiving are the same This is the reciprocity theorem of antennas Specification Name GSM spring antenna L typeFrequency range MHz 824 960MHZ 1710 1 990MHzStanding wave ratio 1 8Input impedance 50Gain 2dBi 3dBiWire diameter 0 8MMSpring outer diameter 5MMTotal length including welding part 24MMInterface form direct weldingPackage included 5 x GSM spring antenna
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