Magnum Dynalab MD-205 - Signal Sleuth - Manual (Page 3)

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HOW THE MD 205 SIGNAL SLEUTH WORKS
The Sleuth is a tunable RF processor for the 88-108 MHz frequency band. It is
capable of applying amplification or attenuation (+ 30dB to –30dB) within this
frequency range. To accomplish its task, the Sleuth adds three RF stages to your
existing tuner’s front end. This circuitry is designed and tuned to optimize the
performance of any FM tuner.
The Sleuth has a 600 KHz skirt to help improve the adjacent channel specification
of your tuner.
Tuning is accomplished using solid state components (varactors) which are
controlled by a long-life low noise potentiometer. The signal is passed through the
Sleuth’s circuitry when the unit is powered up and the ‘Antenna Switch’ is in the
amplify position. When the switch is in the ‘bypass’ position, no amplification is
taking place and the signal is fed directly into your tuner.
The performance of the Sleuth is directly influenced by the type and capability of
the antenna. The better the antenna, the better the sleuth will perform. Please
see the section on
Reception Techniques for more information.