PREAMPLIFICADOR BAJA CIFRA DE RUIDO: 144-430 MHZ

                       C3 Ceramico
                      10 pf variable
                            /
                     +----¦+----+
                     ¦   /      ¦
                     ¦          ¦
                   +---+       ---
                   ¦   ¦
                L1 ¦   ¦                Q 1
                   ¦   ¦              MRF 901            C4
                   ¦   ¦                                47 pf
            C1     ¦   ¦   C2                C
           20 pf   ¦   ¦  20 pf            /--------------¦+------>> OUTPUT
                   ¦   ¦             B  ¦/         ¦              ¦
INPUT >>-----¦+----¦   +---¦+-----------¦          ¦              ¦
       ¦           ¦   ¦          ¦     ¦\        +-+             ¦
       ¦           +---+       +-----+     \ E    ¦ ¦  R1        ---
       ¦             ¦         ¦     ¦     ¦      ¦ ¦ 100 ohms
      ---           ---        ¦RFC-1¦     ¦      ¦ ¦
                               ¦     ¦    ---     +-+                 C8
                               +-----+             ¦  1000 ohms      .001
                                  ¦                ¦  +-------+       ---
                          +-------+------>+--------+--¦  R 3  +-------------<
                          ¦       ¦   Zener 8.2v   ¦  +-------+  ¦    ---
                          ¦      +-+               ¦             ¦+    ¦   12V
                     C5  ---     ¦ ¦  R2          ---  C6   C7  ---    ¦
                    .01  ---     ¦ ¦ 1000 ohms    --- .01   1uF ---    ¦
                          ¦      ¦ ¦               ¦             ¦     ¦
                          ¦      +-+               ¦             ¦     ¦
                          ¦       ¦                ¦             ¦     ¦
                         ---     ---              ---           ---   ---