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 ...

It is a licensee of five television stations, including an unaffiliated property serving the Las Vegas market. Here, a ...

Atlanta-headquartered Gray Media will be the subject of notices of proposed rulemaking that seek public input on plans that would see a trio of the company’s broadcast TV stations reverse ...

If your TV was VHF it couldn’t receive the new channels, and this box was the answer to connecting your UHF antenna to that old TV. It’s a relatively small plastic case about the size of a ...