All amplifiers use imported ultra-high frequency devices with better specifications. It is also the first active antenna with built-in filters. Applicable models include for Tecsun's S series S2000 S8800, PLseries PL-330 PL-365 PL-660 PL-880 PL-990, for Sangean's 909X 909X2, for ICOM's R71E, for Yaesu's FRG-8800, etc., suitable for all shortwave receivers and radios with external antenna interfaces in the corresponding frequency bands, especially for receivers.
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