How to turn on preamp

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I am new to FlexRadio. Running Flex 6500.  I seem to remember turning on the preamp in the past, but, for the life of me I cannot find a way to do it now.  I cannot seem to find it in the documentation either.  Any advice?
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Posted 2 years ago

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Bill W2PKY

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In the ANT menu left side of the panadapter display. Useful for frequencies of 20M & up depending on the receive antenna used.
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Click on ANT (left side of screen) then select the level of RF Gain you want.
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Tim - W4TME, Customer Experience Manager

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The operation of the RF preamp is addressed in section 25.11 and 25.12, Using the Receive RF Gain/Preamplifiers and Setting the RF Gain/Preamplifiers respectively in the SmartSDR Software Users Guide.