{"product_id":"txkg3-automatic-antenna-switcher-3-30mhz-hf-m-type","title":"TXKG3 Automatic Antenna Switcher 3–30MHz HF M-Type","description":"\n\u003ch2\u003eTXKG3 Automatic Antenna Switcher – 3–30MHz HF Band with M-Type Connectors\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eTXKG3 Automatic Antenna Switcher\u003c\/strong\u003e is a professional-grade RF switching solution designed for HF radio operators who need seamless, hands-free antenna management. Built from durable metal construction with M-type (SO-239\/PL-259) connectors, this switcher automatically selects the correct antenna interface based on operating frequency — no manual intervention required. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFully Automatic Switching:\u003c\/strong\u003e Instantly matches the right antenna interface based on RF frequency, eliminating the hassle of manual switching and boosting on-air efficiency.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Supports single, dual, and triple antenna configurations, making it suitable for a broad range of amateur radio and communications setups.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVSWR Protection:\u003c\/strong\u003e Built-in VSWR safeguard with clearly defined power handling limits (≤100W) protects your equipment from overload damage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReal-Time Display:\u003c\/strong\u003e Integrated display screen shows live power values, VSWR readings, frequency band settings, and the currently active antenna port — giving you a complete operational overview at a glance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow-Loss M-Type Connectors:\u003c\/strong\u003e Delivers stable RF transmission with isolation ≥45dB and insertion loss ≤0.3dB, ensuring signal integrity across the entire frequency range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTXKG3\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3MHz – 30MHz (HF)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤100W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMinimum Input Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≥15W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eImpedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsertion Loss\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤0.3dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVSWR\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤1.2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIsolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≥45dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnector Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM-Type (SO-239 \/ PL-259)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC5521 9–15V (Center Positive), 500mA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMetal\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× TXKG3 Automatic Antenna Switcher\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Package includes only the item listed above. Other accessories or antennas shown in product images are not included. Slight color variations may occur due to monitor settings. Dimensional tolerance is ±1–3cm.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/ancient-nutrition-multi-collagen-advanced-muscle-60-capsules\"\u003eAncient Nutrition Multi Collagen Advanced Muscle 60 Capsules\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/bu-29mm-sinking-minnow-jerkbait-fishing-lure-bass-trout-pike\"\u003eB\u0026amp;U 29mm Sinking Minnow Jerkbait Lure – Bass Trout Pike\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What frequency range does the TXKG3 Automatic Antenna Switcher cover?\u003c\/h4\u003e\n\u003cp\u003eA: The TXKG3 is designed for HF operation, covering a frequency range of \u003cstrong\u003e3MHz to 30MHz\u003c\/strong\u003e. It automatically selects the appropriate antenna port within this range without any manual input.\u003c\/p\u003e\n\u003ch4\u003eQ: How many antennas can I connect to the TXKG3 at once?\u003c\/h4\u003e\n\u003cp\u003eA: The TXKG3 supports \u003cstrong\u003esingle, dual, and triple antenna configurations\u003c\/strong\u003e, giving you the flexibility to connect multiple antennas and let the switcher choose the best one for your current operating frequency automatically.\u003c\/p\u003e\n\u003ch4\u003eQ: What power supply does the TXKG3 require?\u003c\/h4\u003e\n\u003cp\u003eA: The TXKG3 requires a \u003cstrong\u003eDC5521 power connector with 9–15V input (center positive, outer negative)\u003c\/strong\u003e at 500mA. It handles RF signals up to 100W and requires a minimum of 15W input power for automatic switching to activate.\u003c\/p\u003e\n\u003ch4\u003eQ: What type of antenna connector does the TXKG3 use?\u003c\/h4\u003e\n\u003cp\u003eA: The TXKG3 uses \u003cstrong\u003eM-type connectors (equivalent to SO-239\/PL-259)\u003c\/strong\u003e, which are common in HF amateur radio setups. Insertion loss is ≤0.3dB and isolation is ≥45dB for stable, low-loss signal transmission.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What frequency range does the TXKG3 Automatic Antenna Switcher cover?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The TXKG3 is designed for HF operation, covering a frequency range of 3MHz to 30MHz. 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