{"product_id":"868mhz-filtered-preamplifier","title":"868MHz Filtered Preamplifier","description":"\u003cp\u003e\u003cstrong\u003eUputronics filtered preamp for improved 868MHz Reception for FLARM\/LoRa\/ISM!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis unit is a small filter and preamp designed to go between a software-defined radio receiver and an antenna. Using a SAW bandpass filter and a low noise amplifier (LNA), it stops out-of-band intermodulation while providing additional gain for increased sensitivity. The LNA is before the SAW filter. \u003cstrong\u003eThis particular model is tuned for use with 868MHz frequencies.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is a cost-effective SAW-based unit which gives excellent performance gains, compatible with most USB SDR Dongles such as the RTL USB, Airspy, Fun Cube etc.\u003c\/p\u003e\n\u003cp\u003eYou can power them from either bias tee (this item is 100% compatible with the Airspy bias-tee) or a simple \u003ca href=\"\/products\/usb-a-to-usb-c-cable-1m\"\u003eUSB-C cable\u003c\/a\u003e (not included).\u003c\/p\u003e\n\u003cp\u003eBias-tee voltage input is 5V. \u003cstrong\u003eNote: Unlike previous models, component supply issues mean bias-tee input voltage is 5V max. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe LNA used is a MiniCircuits PSA4-5043+ which provides at least 16dB of gain @ 868MHz. To stop out-of-band intermodulation an 868MHz SAW bandpass filter, which has a 15MHz bandwidth, is also present. The insertion loss of this filter is approximately 2.3dB, which does increase the overall noise figure of the unit to 0.75dB.\u003c\/p\u003e\n\u003cp\u003eHigh-quality SMA female connectors are fitted for antenna input and radio output, a RED power indicator is provided.\u003c\/p\u003e\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis unit does not have a transmit bypass and is for reception work only \u003c\/strong\u003e- \u003ca href=\"\/products\/868-915mhz-filtered-preamplifier-with-transmit-bypass\"\u003euse this unit instead\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTransmitting via this unit won't work and may damage it.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNOT SUITABLE FOR HELIUM CRYPTOMINING (No TX Bypass) \u003c\/strong\u003e- \u003ca href=\"\/products\/868-915mhz-filtered-preamplifier-with-transmit-bypass\"\u003euse this unit instead\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/HAB-FPA_Series.pdf?v=1730454261\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e3D-printable mounts \u003cem\u003e(Thingiverse)\u003c\/em\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.thingiverse.com\/thing:6836451\" title=\"Uputronics Gen3 LNA Mount with Lugs\"\u003eWith lugs\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.thingiverse.com\/thing:6839128\" title=\"Uputronics Gen3 LNA Mount without Lugs\"\u003eWithout lugs\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/store.uputronics.com\/files\/HAB-FPA%20EU%20Declaration%20of%20Conformity.pdf\" rel=\"noopener\" target=\"_blank\"\u003eCE Certificate of Conformity\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/store.uputronics.com\/files\/HAB-FPA%20UK%20Declaration%20of%20Conformity.pdf\" rel=\"noopener\" target=\"_blank\"\u003eUKCA Certificate of Conformity\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Uputronics","offers":[{"title":"Default Title","offer_id":50847262933265,"sku":"106060","price":42.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/6285\/6209\/files\/868mhz-filtered-preamplifier-uputronics-106060-43011253469379.jpg?v=1735209450","url":"https:\/\/abcd3032.myshopify.com\/products\/868mhz-filtered-preamplifier","provider":"Tayyab Zak","version":"1.0","type":"link"}