Quarter-wavelength GP Antennal
By 骆驼 • 2 19th, 2008 • Category: FM Transmitter Shop • RSS 2.0 • Trackback •| FM Radio Transmitter GP Antenna --- Quarter-wavelength GP antennal | ||
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| Specification:This is a wonderful FM Transmitter Antennae,the length of antennae can be adjust according to the Frequency you set!Frequency range: 85MHz ~ 150 MHzQuarter-wavelength GP antenna introduceIn the Radio Amateurs, Quarter-wavelength antenna can be seen as a simple but effective antenna. So in radio circles It accounts for a considerable proportion，For instance, Most of the police antenna is a quarter-wavelength antenna and so on. So Quarter-wavelength antenna has it’s reason to exist Absolutely.. If you do not know the high-frequency electronic, You may ask what is a quarter wavelength. In a word,It is Antenna Length Unit,it is based on frequency, here is the formula : * From: 骆驼调频 www.21say.com *
Antenna length (Wavelength)=( 30000 /frequency)*1/4 * 0.96(Wavelength Shortening rate) cm---- attention:Antenna Length Unit is cm * From: www.21say.com * For exampl.If you want to make a antenna for 100.00MHZ * From: 骆驼调频 www.21say.com * so we get the length of the antenna is 72cm then we prepare five 72 cm of Drawbars antenna and a M type Joints(figure), then link one of the Drawbars antenna to the main Spindle of the M type Joints, at last link the other four to the corner of the M type Joints(figure) * From: 全网电子 www.21say.com *
Price: US $50.00 * From: 骆驼调频 www.21say.com * Shippment: * From: 骆驼调频 * www.21say.com * We combine postage on multiple purchases. Please check our other items! We ship only by TNT or DHL Express in order to improve the efficiency! * From: 骆驼调频 * 21say.com * Flat international shipment via air mail 8-10 business days 30$ * From: 骆驼调频 * 21say.com * DHL/TNT transfer 4-6 business days 45$ * From: 骆驼调频 * www.21say.com *
Payment: * From: 骆驼电子 www.21say.com *
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