To send signals via radio stations channels, you should either:

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Multiple Choice

To send signals via radio stations channels, you should either:

When sending signals over radio channels, what matters most is the signal-to-noise ratio at the receiver. You can improve that ratio in two practical ways: raise the transmitted power, which makes the received signal stronger and easier to detect over distance or through fading, and narrow the channel bandwidth, which reduces the amount of noise that enters the receiver, since noise power scales with bandwidth. Both ways make the signal stand out more against the background noise. Raising bandwidth would bring in more noise and potentially more interference, which can actually make reception harder for a given power. Lowering power would weaken the signal, reducing range and reliability. So the effective options to improve signal detectability are increasing power or decreasing bandwidth.

When sending signals over radio channels, what matters most is the signal-to-noise ratio at the receiver. You can improve that ratio in two practical ways: raise the transmitted power, which makes the received signal stronger and easier to detect over distance or through fading, and narrow the channel bandwidth, which reduces the amount of noise that enters the receiver, since noise power scales with bandwidth. Both ways make the signal stand out more against the background noise.

Raising bandwidth would bring in more noise and potentially more interference, which can actually make reception harder for a given power. Lowering power would weaken the signal, reducing range and reliability. So the effective options to improve signal detectability are increasing power or decreasing bandwidth.

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