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Since 1937, the KA-226 shortwave converter has been manufactured by the Moscow Radio Front plant. The KA-226 converter is a modernization of the previous KA-116 converter and is designed to receive programs of short-wave radio stations in the range from 17 to 40 meters, together with the ETS, EKL or SI-235 radio receivers and medium waves. The converter has an integrated 120 volt AC power supply.