Antennas And Feeders SPD Antennas feeders SPD, the coax lightning protector or coax surge suppressor, is used in the antenna feeder circuit of the radio communication station to suppress the induced lightning waves from the antenna feeder to protect the radio communication equipment from lightning strikes. If you want to know more about automation and safetysystem, please visit our website. If you want to buy high quality signal surge protection device, please contact us.
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