{"product_id":"tx230-tb-300-230mhz-vhf-magnetic-antenna-5-0dbi-sma","title":"Cdsenet TX230-TB-300 230MHz VHF Sucker Antenna 5.0dBi SMA-J 3m RG58","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;\"\u003e\n      The \u003cstrong\u003eTX230-TB-300\u003c\/strong\u003e is a 230MHz VHF external sucker antenna engineered for long-range industrial wireless communication. It delivers a measured \u003cstrong\u003epeak gain of 5.0 dBi\u003c\/strong\u003e and a typical VSWR of \u003cstrong\u003e1.29 at 230MHz\u003c\/strong\u003e, covering the 210–260MHz VHF band. A pure copper radiator, 62.2mm magnetic base, and 3-meter RG58 coaxial cable make it a deployable solution for industrial APs, wireless modules, and IoT telemetry terminals requiring elevated external antenna placement. Updated March 2026.\n    \u003c\/p\u003e\n    \u003cimg src=\"https:\/\/www.cdebyte.com\/Uploadfiles\/Picture\/2021-3-26\/20213261720353063.jpg\" alt=\"TX230-TB-300 230MHz VHF sucker antenna with magnetic base and RG58 cable\" 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 – 260 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;\"\u003e5.0 dBi\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. 1.29 @ 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;\"\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)\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\u003c\/td\u003e\n            \u003ctd style=\"padding: 12px;\"\u003e3 m RG58 coaxial\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"border-bottom: 1px solid #f0f0f0;\"\u003e\n            \u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eMagnetic Base Diameter\u003c\/td\u003e\n            \u003ctd style=\"padding: 12px;\"\u003e62.2 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;\"\u003eRadiator Material\u003c\/td\u003e\n            \u003ctd style=\"padding: 12px;\"\u003ePure Copper\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;\"\u003e62.2mm Magnetic Sucker Base — Instant Metal-Surface Deployment\u003c\/h3\u003e\n      \u003cp style=\"font-size: 14px; color: #666; margin-bottom: 15px;\"\u003eThe 62.2mm diameter magnetic base provides a secure, tool-free mount on any ferromagnetic metal surface, simultaneously acting as a ground plane to optimize the antenna's radiation pattern and maximize the 5.0 dBi gain. Suitable for vehicle rooftops, equipment cabinets, and industrial enclosure lids. The base can be repositioned without leaving residue, supporting rapid field deployment and redeployment.\u003c\/p\u003e\n      \u003cimg src=\"https:\/\/www.cdebyte.com\/Uploadfiles\/Picture\/2021-3-26\/20213261720352000.jpg\" alt=\"TX230-TB-300 62.2mm magnetic sucker base acting as ground plane for VHF 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    \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;\"\u003eSMA-J Connector with 3m RG58 Low-Loss Coaxial Cable\u003c\/h3\u003e\n      \u003cp style=\"font-size: 14px; color: #666; margin-bottom: 15px;\"\u003eThe standard SMA-J (male, inner pin) connector mates directly with SMA-K female ports on industrial wireless modules and APs. The 3-meter RG58 coaxial feeder provides sufficient routing distance between the antenna mounting point and the host device, with measured insertion loss of approximately 1.5 dB at 230MHz over the full cable length. The cable is UV-resistant and rated for outdoor use.\u003c\/p\u003e\n      \u003cimg src=\"https:\/\/www.cdebyte.com\/Uploadfiles\/Picture\/2021-3-26\/20213261720358175.jpg\" alt=\"TX230-TB-300 SMA-J male connector and 3m RG58 coaxial cable for VHF wireless module\" 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;\"\u003e\n      \u003cp style=\"font-size: 15px; color: #1e3a8a; margin-bottom: 15px;\"\u003eMeasured with a vector network analyzer (Agilent E5071C equivalent): VSWR = \u003cstrong\u003e1.29 @ 230 MHz\u003c\/strong\u003e, confirming ≤1.5 across the full 210–260 MHz operating band. Return loss ≥ 17 dB at center frequency.\u003c\/p\u003e\n      \u003cimg src=\"https:\/\/www.cdebyte.com\/Uploadfiles\/Picture\/2021-3-26\/20213261720356893.jpg\" alt=\"TX230-TB-300 VSWR test chart 230MHz measured with Agilent network analyzer\" 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;\"\u003eIndustrial VHF Networking\u003c\/h3\u003e\n        \u003cp style=\"font-size: 14px; color: #666; margin: 0;\"\u003eIndustrial-grade APs and wireless modules operating at 230MHz for factory automation, SCADA systems, and long-range point-to-point links.\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;\"\u003eSmart Metering \u0026amp; Telemetry\u003c\/h3\u003e\n        \u003cp style=\"font-size: 14px; color: #666; margin: 0;\"\u003eRemote water, gas, and electricity meter reading systems and VHF-band telemetry nodes requiring reliable long-range 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;\"\u003eVehicle \u0026amp; Fleet Tracking\u003c\/h3\u003e\n        \u003cp style=\"font-size: 14px; color: #666; margin: 0;\"\u003eMagnetic roof-mount deployment on fleet vehicles for VHF-band GPS supplementary communication and asset tracking systems.\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; Environmental Monitoring\u003c\/h3\u003e\n        \u003cp style=\"font-size: 14px; color: #666; margin: 0;\"\u003eWide-area sensor networks for soil, weather, and irrigation monitoring using VHF sub-300MHz frequencies for improved ground-level propagation.\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=1236\" 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: Does the TX230-TB-300 need to be frequency-matched to my wireless module?\u003c\/p\u003e\n      \u003cp style=\"color: #555; margin: 0; font-size: 14px;\"\u003eA: Yes. The TX230-TB-300 is tuned for 210–260MHz (center 230MHz) and must be paired with a wireless module operating in this VHF band. Using it with a 433MHz or 915MHz module will result in severe impedance mismatch, high VSWR, and significantly reduced communication range. Always verify your module's operating frequency before selecting an antenna.\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 the antenna be mounted on a non-metallic surface?\u003c\/p\u003e\n      \u003cp style=\"color: #555; margin: 0; font-size: 14px;\"\u003eA: The magnetic base requires a ferromagnetic metal surface to adhere and to function as a ground plane. Mounting on plastic, wood, or fiberglass will prevent the base from holding and will degrade radiation performance, potentially reducing gain by 2–3 dBi. For non-metallic surfaces, a separate metal ground plane sheet (minimum 200 × 200mm) placed under the base is recommended.\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: What is the SMA-J connector standard and is it compatible with my device?\u003c\/p\u003e\n      \u003cp style=\"color: #555; margin: 0; font-size: 14px;\"\u003eA: SMA-J (also written SMA Male or SMA-plug) has an inner pin and outer thread. It mates with SMA-K (SMA Female \/ SMA-jack) ports found on most industrial wireless modules, routers, and APs. Confirm your device has an SMA-K (female) port before ordering. SMA and RP-SMA connectors are not interchangeable — RP-SMA reverses the pin\/socket arrangement.\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: What is the operating temperature range and is the cable suitable for outdoor use?\u003c\/p\u003e\n      \u003cp style=\"color: #555; margin: 0; font-size: 14px;\"\u003eA: The TX230-TB-300 is rated for -40°C to +85°C. The 3m RG58 cable jacket is UV-resistant and suitable for outdoor deployment. The antenna itself is not independently IP-rated; for rain or high-humidity environments, ensure the SMA connector junction is protected with self-amalgamating tape or a weatherproof boot to prevent moisture ingress.\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: Why does VHF 230MHz provide better range than 433MHz or 915MHz in some environments?\u003c\/p\u003e\n      \u003cp style=\"color: #555; margin: 0; font-size: 14px;\"\u003eA: Lower VHF frequencies (210–260MHz) experience less free-space path loss and better ground-wave propagation compared to UHF bands. In open rural, agricultural, and low-obstacle environments, 230MHz antennas can achieve 20–40% greater effective range than 433MHz antennas at equivalent power levels. This makes the TX230-TB-300 particularly suitable for wide-area IoT deployments where obstacle penetration and long-range coverage are priorities.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n\u003c\/div\u003e","brand":"cdsenet","offers":[{"title":"Default Title","offer_id":45301875474534,"sku":"tx230-tb-300","price":10.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0702\/9918\/9350\/files\/TX230-TB-300-_1_800x800_v2.jpg?v=1773986648","url":"https:\/\/cdsenet.store\/products\/tx230-tb-300-230mhz-vhf-magnetic-antenna-5-0dbi-sma","provider":"CDSENET, Built for the Wireless World","version":"1.0","type":"link"}