{"product_id":"tx230-xph-300-230mhz-6dbi-high-gain-vhf-sucker-antenna","title":"Cdsenet TX230-XPH-300 230MHz 6dBi High-Gain Sucker Antenna SMA 3m","description":"\u003cdiv style=\"font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; color: #333; line-height: 1.6; max-width: 1000px; margin: 0 auto; padding: 10px;\"\u003e\n\n  \u003csection style=\"margin-bottom: 40px;\"\u003e\n    \u003ch2 style=\"font-size: 24px; color: #111; border-bottom: 2px solid #eee; padding-bottom: 10px; margin-bottom: 20px;\"\u003eProduct Overview\u003c\/h2\u003e\n    \u003cp style=\"font-size: 16px; color: #444; margin-bottom: 20px;\"\u003eThe \u003cstrong\u003eTX230-XPH-300\u003c\/strong\u003e is a 230MHz VHF high-gain sucker antenna with a middle-loaded induction coil design, engineered for vehicle-mounted data transmission, long-range industrial telemetry, and high-power wireless communication systems. It delivers a \u003cstrong\u003epeak gain of 6.0 dBi\u003c\/strong\u003e — the highest in the 230MHz sucker antenna range — with a typical VSWR of \u003cstrong\u003e1.42 at 228MHz\u003c\/strong\u003e, covering the wide \u003cstrong\u003e210–250MHz\u003c\/strong\u003e VHF band. The 910mm stainless steel radiator, 90mm magnetic base, and 3-meter coaxial cable make it a field-deployable solution for mobile command units, fleet vehicles, and industrial IoT gateways requiring maximum VHF signal range. Updated March 2026.\u003c\/p\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0702\/9918\/9350\/files\/TX230-XPH-300.png?v=1774943319\" alt=\"TX230-XPH-300 230MHz VHF 6dBi high-gain sucker antenna with stainless steel radiator and 90mm magnetic base\" loading=\"lazy\" decoding=\"async\" style=\"display: block; margin: 0 auto; max-width: 100%; height: auto; border-radius: 8px;\"\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin-bottom: 40px;\"\u003e\n    \u003ch2 style=\"font-size: 22px; color: #111; border-bottom: 2px solid #eee; padding-bottom: 10px; margin-bottom: 15px;\"\u003eTechnical Specifications\u003c\/h2\u003e\n    \u003cdiv style=\"overflow-x: auto;\"\u003e\n      \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; text-align: left; border: 1px solid #ececec;\"\u003e\n        \u003cthead\u003e\n          \u003ctr style=\"background-color: #f9f9f9; border-bottom: 2px solid #eee;\"\u003e\n            \u003cth style=\"padding: 12px; font-weight: bold; color: #333;\"\u003eParameter\u003c\/th\u003e\n            \u003cth style=\"padding: 12px; font-weight: bold; color: #333;\"\u003eValue\u003c\/th\u003e\n          \u003c\/tr\u003e\n        \u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr style=\"border-bottom: 1px solid #f0f0f0;\"\u003e\n            \u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eFrequency Range\u003c\/td\u003e\n            \u003ctd style=\"padding: 12px;\"\u003e210 – 250 MHz (Center: 230 MHz)\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"border-bottom: 1px solid #f0f0f0; background-color: #fafafa;\"\u003e\n            \u003ctd style=\"padding: 12px; font-weight: 600;\"\u003ePeak Gain\u003c\/td\u003e\n            \u003ctd style=\"padding: 12px;\"\u003e6.0 dBi (middle-loaded design)\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"border-bottom: 1px solid #f0f0f0;\"\u003e\n            \u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eVSWR\u003c\/td\u003e\n            \u003ctd style=\"padding: 12px; font-weight: bold; color: #c0392b;\"\u003e≤ 1.5 (Typ. 1.42 @ 228 MHz)\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"border-bottom: 1px solid #f0f0f0; background-color: #fafafa;\"\u003e\n            \u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eImpedance\u003c\/td\u003e\n            \u003ctd style=\"padding: 12px;\"\u003e50 Ω\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"border-bottom: 1px solid #f0f0f0;\"\u003e\n            \u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eConnector Type\u003c\/td\u003e\n            \u003ctd style=\"padding: 12px;\"\u003eSMA-J (SMA Male, inner pin and thread)\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"border-bottom: 1px solid #f0f0f0; background-color: #fafafa;\"\u003e\n            \u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eCable Length\u003c\/td\u003e\n            \u003ctd style=\"padding: 12px;\"\u003e300 cm (3 m)\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"border-bottom: 1px solid #f0f0f0;\"\u003e\n            \u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eAntenna Length\u003c\/td\u003e\n            \u003ctd style=\"padding: 12px;\"\u003e910 mm\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"border-bottom: 1px solid #f0f0f0; background-color: #fafafa;\"\u003e\n            \u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eMagnetic Base Diameter\u003c\/td\u003e\n            \u003ctd style=\"padding: 12px;\"\u003e90 mm\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"border-bottom: 1px solid #f0f0f0;\"\u003e\n            \u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eRadiator Material\u003c\/td\u003e\n            \u003ctd style=\"padding: 12px;\"\u003eStainless Steel\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"border-bottom: 1px solid #f0f0f0; background-color: #fafafa;\"\u003e\n            \u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eRadiation Pattern\u003c\/td\u003e\n            \u003ctd style=\"padding: 12px;\"\u003eOmnidirectional (vertical polarization)\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"border-bottom: 1px solid #f0f0f0;\"\u003e\n            \u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eMax Input Power\u003c\/td\u003e\n            \u003ctd style=\"padding: 12px;\"\u003e50 W\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"border-bottom: 1px solid #f0f0f0; background-color: #fafafa;\"\u003e\n            \u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eOperating Temperature\u003c\/td\u003e\n            \u003ctd style=\"padding: 12px;\"\u003e-40 °C to +85 °C\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"border-bottom: 1px solid #f0f0f0;\"\u003e\n            \u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eCompliance\u003c\/td\u003e\n            \u003ctd style=\"padding: 12px;\"\u003eRoHS\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"background-color: #fafafa;\"\u003e\n            \u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eLast Updated\u003c\/td\u003e\n            \u003ctd style=\"padding: 12px;\"\u003eMarch 2026\u003c\/td\u003e\n          \u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin-bottom: 40px;\"\u003e\n    \u003ch2 style=\"font-size: 22px; color: #111; border-bottom: 2px solid #eee; padding-bottom: 10px; margin-bottom: 25px;\"\u003eProduct Details\u003c\/h2\u003e\n    \u003cdiv style=\"background: #ffffff; border: 1px solid #eee; border-radius: 8px; padding: 20px; margin-bottom: 20px;\"\u003e\n      \u003ch3 style=\"font-size: 18px; color: #111; margin: 0 0 10px 0;\"\u003eMiddle-Loaded Induction Coil — 6.0 dBi Gain in 910mm Stainless Steel Radiator\u003c\/h3\u003e\n      \u003cp style=\"font-size: 14px; color: #666; margin-bottom: 15px;\"\u003eThe TX230-XPH-300 achieves 6.0 dBi gain through a middle-loaded induction coil design, which electrically lengthens the radiator beyond its physical 910mm length to optimize current distribution for higher gain. At 230MHz, a standard quarter-wave radiator would measure approximately 326mm; the middle-loaded coil allows the 910mm stainless steel rod to resonate as a 5\/8-wave equivalent, compressing the radiation pattern toward the horizon and increasing gain by approximately 3.5 dB over a standard quarter-wave antenna. The stainless steel construction resists corrosion and mechanical deformation in outdoor and vehicle-mounted deployments.\u003c\/p\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0702\/9918\/9350\/files\/TX230-XPH-300-3.png?v=1774943319\" alt=\"TX230-XPH-300 middle-loaded induction coil design 910mm stainless steel radiator for 6dBi 230MHz VHF gain\" loading=\"lazy\" decoding=\"async\" style=\"max-width: 100%; height: auto; display: block; margin: 0 auto; border-radius: 4px;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background: #ffffff; border: 1px solid #eee; border-radius: 8px; padding: 20px;\"\u003e\n      \u003ch3 style=\"font-size: 18px; color: #111; margin: 0 0 10px 0;\"\u003e90mm Heavy-Duty Magnetic Base — Largest Ground Plane in the 230MHz Range\u003c\/h3\u003e\n      \u003cp style=\"font-size: 14px; color: #666; margin-bottom: 15px;\"\u003eThe 90mm diameter magnetic base is the largest in the CDSENET 230MHz sucker antenna range, providing a greater effective ground plane area that improves radiation efficiency and pattern symmetry for the high-gain 6.0 dBi radiator. The strong magnet secures the 910mm antenna to vehicle rooftops, equipment cabinets, and steel enclosure lids at highway speeds without additional fasteners. The 3-meter coaxial cable provides sufficient routing distance from the vehicle roof to the transceiver inside the cabin.\u003c\/p\u003e\n      \u003cimg src=\"https:\/\/www.cdebyte.com\/Uploadfiles\/Picture\/2023-3-22\/2023322154102938.jpg\" alt=\"TX230-XPH-300 90mm heavy-duty magnetic base large ground plane for 230MHz VHF high-gain vehicle antenna\" loading=\"lazy\" decoding=\"async\" style=\"max-width: 100%; height: auto; display: block; margin: 0 auto; border-radius: 4px;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin-bottom: 40px;\"\u003e\n    \u003ch2 style=\"font-size: 22px; color: #111; border-bottom: 2px solid #eee; padding-bottom: 10px; margin-bottom: 20px;\"\u003eProfessional Test Report\u003c\/h2\u003e\n    \u003cdiv style=\"background-color: #f8fbff; border: 1px solid #e1ecf7; border-radius: 8px; padding: 20px; text-align: center; margin-bottom: 20px;\"\u003e\n      \u003cp style=\"font-size: 15px; color: #1e3a8a; margin-bottom: 15px;\"\u003eMeasured with \u003cstrong\u003eAgilent E5071C\u003c\/strong\u003e vector network analyzer: VSWR = \u003cstrong\u003e1.42 @ 228 MHz\u003c\/strong\u003e, confirming ≤1.5 across the 210–250 MHz operating band. Return loss ≈ 15 dB at the measured frequency point.\u003c\/p\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0702\/9918\/9350\/files\/TX230-XPH-300-1.png?v=1774943319\" alt=\"TX230-XPH-300 VSWR test chart 210-250MHz measured with Agilent E5071C network analyzer VSWR 1.42\" loading=\"lazy\" decoding=\"async\" style=\"max-width: 100%; height: auto; border-radius: 4px;\"\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background-color: #f8fbff; border: 1px solid #e1ecf7; border-radius: 8px; padding: 20px; text-align: center;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0702\/9918\/9350\/files\/TX230-XPH-300-2.png?v=1774943319\" alt=\"TX230-XPH-300 radiation pattern test chart 230MHz VHF high-gain omnidirectional sucker antenna\" loading=\"lazy\" decoding=\"async\" style=\"max-width: 100%; height: auto; border-radius: 4px;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin-bottom: 40px;\"\u003e\n    \u003ch2 style=\"font-size: 22px; color: #111; border-bottom: 2px solid #eee; padding-bottom: 10px; margin-bottom: 25px;\"\u003eIdeal Applications\u003c\/h2\u003e\n    \u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 20px;\"\u003e\n      \u003cdiv style=\"flex: 1 1 220px; min-width: 200px; border: 1px solid #f0f0f0; border-radius: 10px; padding: 15px; background: #fff;\"\u003e\n        \u003ch3 style=\"font-size: 16px; margin: 0 0 8px 0; color: #0056b3;\"\u003eVehicle-Mounted Data Transmission\u003c\/h3\u003e\n        \u003cp style=\"font-size: 14px; color: #666; margin: 0;\"\u003eFleet vehicles, mobile command units, and survey equipment requiring a high-gain 230MHz VHF antenna with magnetic roof-mount and 3m cable routing to the in-cabin transceiver.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv style=\"flex: 1 1 220px; min-width: 200px; border: 1px solid #f0f0f0; border-radius: 10px; padding: 15px; background: #fff;\"\u003e\n        \u003ch3 style=\"font-size: 16px; margin: 0 0 8px 0; color: #0056b3;\"\u003eLong-Range Industrial Telemetry\u003c\/h3\u003e\n        \u003cp style=\"font-size: 14px; color: #666; margin: 0;\"\u003eRemote wireless telemetry, SCADA communication nodes, and industrial data acquisition systems where the 6.0 dBi gain extends communication range compared to standard 4.0 dBi sucker antennas.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv style=\"flex: 1 1 220px; min-width: 200px; border: 1px solid #f0f0f0; border-radius: 10px; padding: 15px; background: #fff;\"\u003e\n        \u003ch3 style=\"font-size: 16px; margin: 0 0 8px 0; color: #0056b3;\"\u003eDigital Radio \u0026amp; Base Stations\u003c\/h3\u003e\n        \u003cp style=\"font-size: 14px; color: #666; margin: 0;\"\u003e230MHz digital radio station systems, fixed base station antennas, and high-power wireless communication nodes requiring 50W input power capacity and broad 210–250MHz band coverage.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv style=\"flex: 1 1 220px; min-width: 200px; border: 1px solid #f0f0f0; border-radius: 10px; padding: 15px; background: #fff;\"\u003e\n        \u003ch3 style=\"font-size: 16px; margin: 0 0 8px 0; color: #0056b3;\"\u003eAgricultural \u0026amp; Infrastructure Monitoring\u003c\/h3\u003e\n        \u003cp style=\"font-size: 14px; color: #666; margin: 0;\"\u003eWide-area agricultural sensor networks and infrastructure monitoring systems using 230MHz VHF, where the 6.0 dBi gain provides extended range over standard 2.5–4.0 dBi antennas.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin-bottom: 40px;\"\u003e\n    \u003ch2 style=\"font-size: 22px; color: #111; border-bottom: 2px solid #eee; padding-bottom: 10px; margin-bottom: 25px;\"\u003eResources\u003c\/h2\u003e\n    \u003ca href=\"https:\/\/www.cdebyte.com\/pdf-down.aspx?id=1232\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"display: inline-block; padding: 12px 25px; background-color: #0056b3; color: #fff; text-decoration: none; border-radius: 6px; font-weight: 600; font-size: 15px;\"\u003e📄 Download Datasheet (PDF)\u003c\/a\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"border-top: 1px solid #eee; padding-top: 30px;\"\u003e\n    \u003ch2 style=\"font-size: 20px; color: #111; margin-bottom: 20px;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n    \u003cdiv style=\"margin-bottom: 20px; padding: 15px; background: #fafafa; border-radius: 8px;\"\u003e\n      \u003cp style=\"font-weight: bold; margin-bottom: 6px;\"\u003eQ: What does the middle-loaded design mean and how does it achieve 6.0 dBi?\u003c\/p\u003e\n      \u003cp style=\"color: #555; margin: 0; font-size: 14px;\"\u003eA: A middle-loaded antenna uses an induction coil positioned along the radiator to electrically lengthen it beyond its physical size, allowing the antenna to resonate as a 5\/8-wave equivalent at 230MHz. This compresses the radiation pattern toward the horizon (reducing energy radiated upward\/downward) and increases gain in the horizontal plane to 6.0 dBi — approximately 2 dB more than a standard 4.0 dBi quarter-wave sucker antenna. The trade-off is a narrower vertical beamwidth, which is acceptable for ground-level communication links.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin-bottom: 20px; padding: 15px; background: #fafafa; border-radius: 8px;\"\u003e\n      \u003cp style=\"font-weight: bold; margin-bottom: 6px;\"\u003eQ: Is the TX230-XPH-300 suitable for high-speed vehicle mounting?\u003c\/p\u003e\n      \u003cp style=\"color: #555; margin: 0; font-size: 14px;\"\u003eA: Yes. The 90mm magnetic base provides strong holding force on ferromagnetic vehicle rooftops, and the stainless steel radiator resists wind-induced vibration and corrosion from rain and road salt. The antenna is rated for -40°C to +85°C, covering the full range of vehicle operating environments. For highway speeds above 120 km\/h, verify the magnetic base holding force against the vehicle's roof material thickness, as thicker steel panels reduce effective magnetic force.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin-bottom: 20px; padding: 15px; background: #fafafa; border-radius: 8px;\"\u003e\n      \u003cp style=\"font-weight: bold; margin-bottom: 6px;\"\u003eQ: How does the TX230-XPH-300 compare to the TX230-XP-200 and TX230-TB-300?\u003c\/p\u003e\n      \u003cp style=\"color: #555; margin: 0; font-size: 14px;\"\u003eA: The TX230-XPH-300 delivers 6.0 dBi gain with a 910mm stainless steel radiator, 90mm base, and 300cm cable — optimized for maximum range in vehicle and base station deployments. The TX230-XP-200 (4.0 dBi, ABS+PC housing, 200cm cable) is more compact and suited for industrial enclosure mounting. The TX230-TB-300 (5.0 dBi, pure copper rod, 300cm RG58 cable) offers a middle ground. Choose XPH-300 when maximum gain and vehicle-grade durability are the priority.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin-bottom: 20px; padding: 15px; background: #fafafa; border-radius: 8px;\"\u003e\n      \u003cp style=\"font-weight: bold; margin-bottom: 6px;\"\u003eQ: Can this antenna be used with 433MHz or other sub-1GHz modules?\u003c\/p\u003e\n      \u003cp style=\"color: #555; margin: 0; font-size: 14px;\"\u003eA: No. The TX230-XPH-300 is tuned for 210–250MHz. Using it at 433MHz will result in a VSWR exceeding 5.0 and a communication range reduction of 80% or more, and may stress the transmitter PA stage. For 433MHz applications, use a dedicated 433MHz antenna. For 170MHz applications, use the TX170-TB-300 or TX170-XP-200. Always match the antenna's center frequency to your module's operating frequency.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"padding: 15px; background: #fafafa; border-radius: 8px;\"\u003e\n      \u003cp style=\"font-weight: bold; margin-bottom: 6px;\"\u003eQ: What is the operating temperature range and is the stainless steel radiator suitable for outdoor use?\u003c\/p\u003e\n      \u003cp style=\"color: #555; margin: 0; font-size: 14px;\"\u003eA: The TX230-XPH-300 is rated for -40°C to +85°C. The stainless steel radiator is corrosion-resistant and suitable for long-term outdoor deployment in rain, humidity, and coastal salt-air environments. For direct rain exposure at the SMA connector junction, apply self-amalgamating tape or a weatherproof boot to prevent moisture ingress. The stainless steel construction provides significantly better corrosion resistance than copper or aluminum rod alternatives in harsh outdoor environments.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n\u003c\/div\u003e","brand":"cdsenet","offers":[{"title":"Default Title","offer_id":45301875671142,"sku":"tx230-xph-300","price":10.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0702\/9918\/9350\/files\/TX230-XPH-300-_2_800x800_v2.jpg?v=1773986648","url":"https:\/\/cdsenet.store\/products\/tx230-xph-300-230mhz-6dbi-high-gain-vhf-sucker-antenna","provider":"CDSENET, Built for the Wireless World","version":"1.0","type":"link"}