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MiCWL UHF 400 Channel Adjustable Frequency Wireless 8 Clip-On Microphone System | eBay
AWR-DRP9050-106279 Digital UHF 400-470 MHz, 50-Watt Repeater With Duplexer - HiTech Wireless Store - Business Two Way Radio
Amazon.com: Fumei UHF 400-470MHz 50W Duplexer for Radio Repeater with Preseted Low Frequency 462MHz & High Frequency 467MHz & N Female connectors : Electronics