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电子工程专辑
2 年
VHF和UHF信号视距传播距离计算器
但是在电离层和大气层(对流层)的特殊条件下,40MHZ以上的VHF和UHF信号可以沿地球表面传播到数百公里以外,我们通常把这种超“视距”的传播称为远距离传播。有时,VHF段的无线电信号也可以通过电离层的特殊条件反射,传播到几千公里以外,这种传播我们 ...
Hackaday
5 个月
VHF/UHF Antennas, The Bad, The Ugly, And The Even Worse
Some of the antennas weren’t bad on the UHF band. That makes sense because the antenna is physically larger but at VHF the size didn’t seem a big difference. He even showed up a little real ...
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December Cold Moon
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Announces he’s cancer-free
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Ice storm warnings issued
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Denied new trial
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14 North Koreans charged
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Expected to plead guilty
Ex-Syrian official charged
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Settle sexual assault suit
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