{"product_id":"k9dp-qrp-am-broadcast-interference-bci-filter-male-female-bnc","title":"K9DP QRP AM Broadcast Interference BCI Filter Male\/Female BNC","description":"\u003cp\u003eIn this review the K9DP QRP AM Broadcast Interference BCI Filter is evaluated for low-power HF operators who face strong AM broadcast overload. The bottom line: this compact, fully assembled Male\/Female BNC filter is best for hikers, POTA and SOTA operators and owners of Xiegu and SDR rigs who need a simple inline solution to reduce front-end desensitization. The reviewer found it effective at taming nearby AM stations without adapters, easy to carry at just 3.4 in length and light enough for field work.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eFully assembled in the USA:\u003c\/strong\u003e Ships ready to use so you can plug it into your radio immediately without soldering or assembly delays.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMale\/Female BNC connectors:\u003c\/strong\u003e Lets you connect directly to many QRP radios without extra adapters, simplifying field setups.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDesigned for AM BCI reduction:\u003c\/strong\u003e Tailored to reduce front-end overload from AM broadcast stations on HF rigs and SDR receivers.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLightweight and portable:\u003c\/strong\u003e At 3.4 in and about 30 grams it is easy to pack for Parks on the Air, Summits on the Air and Field Day operations.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTested to 20 watts:\u003c\/strong\u003e Verified operation with SSB, CW and digital FT8 at typical QRP and modest power levels for reliable field use.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eQuality components:\u003c\/strong\u003e Uses C0G (NP0) capacitors and Micrometals toroids for stable performance and durability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe K9DP BCI filter is ideal for QRP operators using Xiegu radios such as the X6100, X5105, G90 or G106, and for SDR users who experience front-end overload from strong AM broadcast stations. Its compact size and male\/female BNC format make it a practical carry item for portable operators who need a plug-and-play interference mitigator.\u003c\/p\u003e\n\u003cp\u003eOperators who require in-line attenuation for much higher power beyond the tested 20 watts, or those needing multi-band notch solutions for complex RFI environments, should consider alternative or additional filtering options. This unit is focused on practical, low-power use rather than lab-grade high-power filtering.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eSmall, lightweight and portable, making it easy to include in any field kit.\u003c\/li\u003e\n \u003cli\u003eDirect Male\/Female BNC connectivity avoids extra adapters for many QRP radios.\u003c\/li\u003e\n \u003cli\u003eBuilt with stable C0G capacitors and Micrometals toroids for consistent performance.\u003c\/li\u003e\n \u003cli\u003eTested with SSB, CW and FT8 up to 20 watts, covering common QRP operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eRated testing to 20 watts means operators running higher power should seek a higher-rated filter for safety.\u003c\/li\u003e\n \u003cli\u003eSingle-purpose BCI filtering may not address every form of complex RFI or broad-spectrum noise.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003eMale\/Female BNC\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eIntended Use\u003c\/td\u003e\n\u003ctd\u003eAM broadcast interference (BCI) reduction for HF radios and SDRs\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e3.4 in (86 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox 30 grams\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTested Power\u003c\/td\u003e\n\u003ctd\u003eUp to 20 watts (SSB, CW, FT8)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eKey Components\u003c\/td\u003e\n\u003ctd\u003eC0G (NP0) capacitors and Micrometals toroids\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eAssembly\u003c\/td\u003e\n\u003ctd\u003eFully assembled and tested in the USA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe K9DP QRP BCI filter is a pragmatic, well-built accessory for QRP and portable operators who need to reduce AM broadcast overload without adding bulk or adapters. Its tested performance to 20 watts and quality parts make it good value for Xiegu owners and SDR users undertaking field activations, though high-power stations should look at higher-rated options.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this connect directly to my Xiegu radio?\u003c\/strong\u003e\u003cbr\u003eYes, the Male\/Female BNC connector version is designed to plug directly into many Xiegu models without additional adapters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat power levels can it handle?\u003c\/strong\u003e\u003cbr\u003eIt has been tested up to 20 watts with SSB, CW and FT8; higher continuous power is outside the stated test range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it suitable for portable activations like POTA or SOTA?\u003c\/strong\u003e\u003cbr\u003eYes, the small size and 30 gram weight make it convenient for POTA, SOTA and Field Day deployments.\u003c\/p\u003e","brand":"Generic","offers":[{"title":"Default Title","offer_id":48243247874267,"sku":"B0CFK1DJJL","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/41FZiPqtxAL._AC_SL1200.jpg?v=1771091319","url":"https:\/\/gearmusthave.com\/products\/k9dp-qrp-am-broadcast-interference-bci-filter-male-female-bnc","provider":"GearMustHave","version":"1.0","type":"link"}