Oscilloscope attachment generator for setting up satellite receivers. Scheme, description

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Oscilloscope attachment generator for setting up satellite receivers. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Measuring technology

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The generator core of this attachment uses the local oscillator circuit engineer Matjaz Vidmar YT3MV (ex YU3UMV) 1986. When you connect the output of the saw to the X input of the oscilloscope, and the output of the RF. (through an external attenuator) to the input of the satellite receiver, you can observe the frequency response of its input circuits and adjust them. For the Y input of the oscilloscope, a microwave is required. detector head.

(click to enlarge)

Frequency tuning can also be done manually with the potentiometer R1. W.h. level the output is about 0,5 volts in the range of 0,9-2 GHz. I would especially like to note that soldering the microwave varicaps need low-melting solder, quickly and without errors, because after re-soldering, their capacitance overlap ratio inevitably drops. This is probably due to the degradation of the semiconductor at elevated temperatures.

Publication: shustikov.by.ru

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