Bought these to use in conjunction with the 4glte modem on my FPV drone called Parrot Disco and they allow me, in combination with the modem, to record video and To send control signals as well as to generate signals The cellular range of my drone is mainly limited by the battery power alone! I like these antennas, although they are strong, sometimes the signal is not very good, not sure if it is because of the antenna.
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