In a TVRO circuit, the antenna is connected directly to the amplifier. To match the input impedance of the antenna and the 15 kΩ input resistance of the amplifier a coupling system is used with a 10:1 ratio. The amplifier has an equivalent noise resistance of 120 kΩ. The noise voltage seen at the amplifier input terminal is ___ V. Given that the effective noise bandwidth is 17 kHz at room temperature (290 K).

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