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The portable radio receiver Neptun-103B-1 produced the Riga Popov Radio Factory since 1967. The receiver had a non-standard KV-1 subrange from 15.9 to 17.1 MHz for export, but it was also produced for the USSR, produced less than a year, after which it received the name Riga-103, where the KV subbands are standard for the USSR. Radio "Neptun-103B-1" had several types of design, and the design and layout is similar to the model "Riga-103".