How does a digital satellite finder work?

Written by charles pearson
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How does a digital satellite finder work?
(Flickr creative commons)

Voltage Controlled Oscillator

The electronic oscillator produces electrical signals. Voltage-controlled oscillators control how much electricity is input into the digital satellite finder. This is done by using a varicap diode, which can hold different amounts of charges by using reverse-bias. The voltage controlled oscillator can determine how much of a signal the satellite is sending, allowing the receiver to pinpoint where the satellite is.

Voltage Reading

The ACG voltage from the satellite signal is read by the meter and the audible tone. This signal is converted by the low-noise block converter (LNB). The LNB uses a waveguide to guide waves to the LNB.


Satellite finders must be adjusted until the satellite finder detects the strongest signal. This allows you to locate where the satellite is in the sky. The finder can be moved using an adjustable scale. On top of the finder is a Compass Sight, which will give you readings and also help you indicate any obstacles to the finder.

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