Efficiently cuts interference waves from the rear. A fixed station 400MHz band 8-element Yagi antenna with enhanced F/B ratio characteristics.
The S-8BD-4502RD (S8BD4502RD) is a snow-resistant antenna with 8 elements in a Yagi configuration, manufactured by Nippon Antenna, designed for the 400 MHz band. It is a unidirectional antenna compatible with fixed station radios, usable over a wide frequency range of 330 to 470 MHz. Please specify the transmission frequency ft (MHz) and reception frequency fr (MHz) when placing your order. By shaping the reflector of the Yagi antenna into a screen shape, the front-to-back ratio (F/B ratio) is enhanced. This effectively suppresses interference waves coming from the rear, supporting stable radio communication. The radiating elements and the first guiding element are made of FEP pipe. This snow-resistant structure reduces performance degradation caused by snow accumulation on the antenna. It can accommodate both vertical and horizontal polarization, allowing it to be used according to the installation environment and radio communication system. The gain is 10.5 dB relative to a dipole and an absolute gain of 12.65 dB. Its directivity makes it suitable for radio communication in specific directions. *For more details, please feel free to contact us.
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basic information
〔Basic Specifications〕 - Manufacturer: Nippon Antenna - Model: S-8BD-4502 - Antenna Type: Screened Wideband 8-element Yagi Antenna - Application: Fixed Station Use - Directionality: Unidirectional - Polarization: Vertical or Horizontal Polarization - Operating Frequency: 330–470 MHz band (fo±10 MHz) - Input Impedance: 50Ω - Standing Wave Ratio: 1.5 or less within the band - Gain: Dipole Ratio 10.5dB, Absolute Gain 12.65dB 〔Directional and Electrical Characteristics〕 - Directionality (Average): E-plane Half Power Beamwidth ±20°, H-plane Half Power Beamwidth ±24° - Front-to-Back Ratio: 20dB (180±30°), 15dB (180±60°) - Insulation Resistance: At the feed point, DC500V in dry conditions, 500MΩ or more - Dielectric Strength: At the feed point, apply AC1000V for 1 minute in dry conditions without abnormalities 〔Connection and Environmental Specifications〕 - Feed Point Connector Type: N-J Type - Antenna Weight: Approximately 5.0kg - Maximum Wind Load: Approximately 330N (at 60m/sec) - Production Method: Made to Order - Product Code: 2056307
Price information
Manufacturer's price: 258,700 yen (excluding tax) We aim to sell at a lower price than anywhere else. Please contact us for our selling price.
Price range
P3
Delivery Time
Applications/Examples of results
【Examples of Use】 ■Construction and civil engineering ■Infrastructure industries such as electricity, gas, and water supply ■Railway and transportation-related ■Local governments and public offices ■Factories and manufacturing ■Mining and quarrying ■Security industry ■Forestry and businesses in mountainous areas, etc.
catalog（3）
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Company information
Exceli Co., Ltd. sells and rents wireless devices, transceivers, and intercoms. With 33 years of experience, we have a track record of transactions with over 70,000 customers. We provide support 365 days a year until late at night, delivering wireless devices, transceivers, and intercoms throughout Japan. Additionally, we offer free trials for almost all models before purchase. Rest assured, we also handle after-sales repairs in-house. We are a company approved under the Ministry of Economy, Trade and Industry's Management Innovation Support Law (No. 15 Sanro Shokei 707). We have been certified as a premier dealer by Motorola for our excellence in "proposal capability," "after-sales maintenance," "experience," and "technical skills."
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