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Security (anti-spam) Question: How many dits in 72?
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Record #
38
RevDate
Wed, 02 Jul 2014 13:10:32 -0500
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This low-noise JFET preamp gives a gain of about 10 dB before the RF hits the mixer. The output of the amp also contains a single tuned bandpass filter. Another stage of filtering would be preferable, but again this is a design trade-off due to contest restraints. The BP filter is set for a 14 MHz passband, but this may change to fit a different band later. -Jason, NT7S 28 Jan 2007
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NT7S_RF_Preamp.gif
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NT7S_RF_Preamp.zip
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