VHF converter on the K174PS1 chip. Scheme, description

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VHF converter on the K174PS1 chip. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / radio reception

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This converter is designed to work together with the receiver. Used to raise the range. It is not made for a specialized K174PS1 microcircuit. The circuit has a good decoupling between the local oscillator signal and the output signal.

VHF converter on the K174PS1 chip

It has a voltage stabilizer in its composition and therefore is not critical to nutrition. The local oscillator frequency is set to 40 MHz. At the load of the converter, resistor R3, the total and differential components of the signal are allocated. If the converter is used in a receiver with a range of 88-108 MHz, then the frequency will rise to 128-148 MHz.

L1 - wound on a tuning core from the SB-1A magnetic circuit and contains 5 turns of PEV wire 0,3 wound turn to turn.

The chip is operational up to 200 MHz. The microcircuit can be replaced with K174PS4 or an analogue of SO42P.

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