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In many radiotechnical systems the microwave power amplifiers based on the monolithic integrated circuits, especially in the output power amplifiers (OPA) of transceiving modules AFAR, have become commonly used. It has been shown that selective distributions of the submodules of the output power amplifiers (OPA) of the APAL transceiving modules of the AFAR X-range on minimum and maximum output power and also on the maximum standing wave ratio (SWR) have a two-modal character, that demonstrates the existence of the prevailing factors of the assembly quality, leading to an appearance of the second mode. The distribution of the OPA submodules on the standing wave ratio by the form is close to the exponential distribution law, and on the consumed current - to the normal distribution law with a small relative average quadratic deviation. The absence of significant correlation between the consumed current and the level of the minimum output power means that the dispersion is determined by the level of the minimum output power but not by the quality of the OPA assembly, and not by the quality of monolithic integrated circuits.

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