432XP50圓極化八木天線專為EME地月通信、衛星通信和長途對流層散射用途而設計。雙極化的靈活性對于長時間等待中消除法拉第極性旋轉的EME特別有價值。為衛星通信和長距離對流層路徑提供極性靈活性也是非常有用的。這種極化靈活性也可以處理由于丘陵、山地人和建筑物而產生的極性變化,更不用說工作的移動電話和具有垂直方向的小型電臺了。
432XP50圓極化八木天線的增益和前向后向比(F/B)非常好。天線的方向圖非常干凈。
為了使天線的噪聲溫度與當前流行的低噪聲前置放大器相匹配,該方向圖非常重要。使用單只432XP50、兩支或四支八木天線組成的天線陣列都是一個非常小、易于管理的組合,即使使用像Dxpeditions這樣的非常普通的電臺,也可以進行月球地(EME)天線!
The 432XP50has been specifically designed for EME, Satellite and long haul tropo-scatter use. The dual polarity flexibility is particularly valuable for EME where the long waits for Faraday polarity rotation are eliminated. Having polarity flexibility for Satellie and long haul tropo paths is very useful as well. This flexibility handles polarity shift due to Hills, mountians and buildings, not to mention working mobiles and modest stations with verticals. Gain and F/B are excellent. The extremely clean pattern maximizes forward gain and F/B. The pattern is important in order to match the antenna’s noise temperature with modern low-noise preamps. Using the 432XP50 in and array of two or four antennas is a very small, manageable package that can make moonbounce (EME) contacts even with very modest stations like Dxpeditions!
The driven elements areCNC machined aluminum,O-ring sealed connectors assure low maintenance and long-term peak performance. Internal connections are embedded in a space-age silicone gel that seals out moisture and improves power handling. The 3/16” 6061-T6 rod elements are centered in the boom to minimize polarity interaction. Insulators are UV stabilized and locked in place with stainless retainers. The central boom section is 1-1/2" dia., tapering, front and rear,through 1-1/4" sections to 1" ends. A built in, non conductive vertical mast and Dacron cord supports the boom., M2 can supply all the parts for arrays of any size. M2makes the HPR-1, high power relay for polarity selection.M2 makes the best switching and non preamps using the latest device technology. See web site for more details.
