How far can you talk on 10 meters?

Go here for in depth propagation information. Ground Wave (How far can I transmit?) Ten meter ground wave (direct) propagation is much more predictable than “sky wave”. Local contacts up to 40 or 50 miles or more can be expected 24 hours a day and is very useful for local communication.

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Why do we use higher frequency?

Increasing the frequencies will give everyone more “room” to transmit radiowaves . Increasing data rates, because having a higher carrier frequency also allows to widen the communication channel. Miniaturization (higher frequencies = lower wavelengths = smaller antennas and systems)

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What is low frequency used for?

The Low Frequency (LF) band is mostly used for AM broadcasting in Europe as well as in areas of Northern Africa and Asia . Similar to VLF, LF can also be used for navigational radio beacons. It can also be used for maritime ship-to-shore communication, as well as transoceanic air traffic control.

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