I.F. Amplifier


Posted on May 4, 2012

The I.F. amplifier is similar to the one used in the 80M receiver project . The original design has been modified by putting a couple of LED`s in the source circuit of each Mosfet. The voltage drop across the LED`s keeps the source voltage at about two volts. This results in a much greater AGC range. This arrangement was suggested by N6BIU. Thanks Jim. The I.F. transformer primary has 18 turns, the secondary winding has 4 turns.


I.F. Amplifier
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