What is fine tuning in radio?
verb (used with object), fine-tuned, fine-tun·ing. to tune (a radio or television receiver) to produce the optimum reception for the desired station or channel by adjusting a control knob or bar.
How do you amplify a radio signal?
Use a signal amplifier: You can place a signal amplifier (aka signal booster) between the antenna and your receiver or radio to boost the signal. Just connect the cable coming from the antenna to the input of the amplifier. and then connect the output to your radio or receivers' antenna input.