Three-program prefix `` Rainbow ''.
Three-program receivers.The three-program "Rainbow" prefix has been produced since 1981. The set-top box works in conjunction with a subscriber loudspeaker in a three-program wire broadcasting network. Programs are selected with a push-button. In the PT there is an adjustment of the sensitivity of the channels of the 2nd and 3rd programs. RF channel sensitivity 0.25 V. Rated output power 250 mW. The range of reproducible sound frequencies at the output of the set-top box is 100 ... 6300 Hz. Power consumption 2 W.