I need to add a VHF antenna to my existing UHF antenna so I can get channel 2. I have a channelmaster 4228 and it works beautifully...except for channel 2. I originally intended to go all HD at my ...

The higher a marine VHF antenna is mounted, the greater the distance its VHF radio can transmit and receive. That means one of the best installation locations for top radio performance is overhead on ...

To use a smaller antenna, we need a higher signal frequency, and that’s what we do when we apply modulation to the signal. Modulation is simply encoding the low frequency signal in the information of ...

Forbes contributors publish independent expert analyses and insights. I write about all things space -- exploration, astronomy and more. Artist's impression of the European Space Agency's Biomass ...