All-wave tuner '' Adagio ''.

Radiols and receivers p / p stationary.DomesticAll-wave tuner "Adagio" was developed in 1981 at VNIIRPA. The first domestic all-wave Hi-Fi tuner with the code name "Adagio" was developed at VNIIRPA and produced in small quantities. The technical solutions used in it will later be reflected in the models "Laspi-004-stereo" and "Laspi-005-stereo". The real sensitivity of the tuner along the AM and FM paths is 25 and 1 μV, respectively, the selectivity for the mirror and other additional reception channels in the VHF range is 110 dB, in all others it is not less than 50 dB, the harmonic distortion at a frequency of 1 kHz when receiving stereo transmissions is 0.2 %, monophonic (also in the VHF range) 0.1%; crosstalk between stereo channels at a frequency of 1 kHz is not less than 46 dB. The tuner used for the first time: a frequency synthesizer in all ranges, a one-hand positional-speed unit for tuning and range switching, an electronic memory for 15 fixed settings with an indication of the first free cell, a keyboard for direct input of frequency values ​​or selection of a fixed setting. The model has an alphanumeric indicator of frequency, range and preset numbers, multi-beam reception indicator, electronic stereo balance control. There is an adjustment of the IF bandwidth both in the AM and FM channels, automatic maintenance of a given signal-to-noise ratio when receiving stereo broadcasts from distant radio stations. In addition, the tuner has a Dolby noise reduction unit (operates in the VHF range), an electronic system for adjusting the radiation pattern of the built-in magnetic antennas, and a unit for allocating one sideband in the AM path to cancel interference. The tuner accepts two pairs of stereo headsets or an external high-quality bass amplifier. The tuner "Adagio" was not put into serial production.