How Does an AM Bar Antenna Work?
AM (Amplitude Modulation) signals travel far distances through the air, but can result in static-filled and weak audio on a receiving radio. An AM bar antenna is a simple functioning reception booster that works with any AM radio.
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Identification
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An AM bar antenna consists of an antenna element, a ferrite stick and a rotating knob tuner. A user places the element in a window, or even outside. Adjusting the element in a variety of positions helps the user find the strongest signal reception for that particular AM radio frequency. The ferrite stick simply rests on top of the AM radio, preferably in the center.
Function
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The receiving antenna element amplifies any incoming AM signal. The amplified signal travels from the element to the ferrite stick, where it filters out static and distortion. The user adjusts the tuner knob for the best reception, as the filtered audio plays from the AM radio.
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Considerations
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Install the antenna element away from electronic devices, such as a computer or television. The AM signals are weaker than competing frequencies emanating from electronic devices. The element requires as little static interference as possible for proper functioning.
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