SIU-300 (Izmeritel'nyj komplekt) 1975
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Measuring kit "P-322" was produced presumably since 1975. The measuring kit is intended for tuning and operational measurements of the channels of PM, group and linear paths of multichannel telecommunication equipment, as well as its individual nodes in the range up to 300 kHz. The complex includes a signal generator "GS-300" and a selective level meter "SIU-300". The generator "GS-300" was produced in two versions of the digital scale.
Information from collection of Valery Khartchenko