I usually refrain from commenting in my section “Thumbing through old pages,” but regarding this device, I probably won’t be able to resist the temptation. For all his shortcomings, and he certainly had them (starting from the high KGI), and so - with all its shortcomings, this device is somehow nostalgic, or something... Perhaps, during its development, the engineers managed to capture some form of harmony. At least - it seems so to me now... It's a pity that he was born late - in 1969 he would have turned out just right...
"Radio" No. 8, 1975.
Tape recorder "SPRING-306"
Eng. R. ANIKIN, engineer B. KIMBURG, engineer. A. PANCHENKO, engineer. V. PROKHOROV
The Vesna-306 tape recorder has, in a relatively short time, established itself as one of the best cassette tape recorders in its class. The Vesna-306 uses an original single-motor tape drive mechanism with an indirect drive of the drive shaft, which is powered by a contactless DC electric motor BDS-0.2. What distinguishes the Vesna-306 tape drive mechanism from similar mechanisms of domestic tape recorders that work with compact cassettes is the use of two flywheels connected to the electric motor by a common rubber belt. This eliminates fluctuations in belt speed when working in transport and on the go.
The new design of the rewinding unit with a friction roller, inside of which there is a safety clutch that is activated at the end of rewinding, eliminates tape breakage in the cassette and ensures reliable adhesion of the friction roller to the flywheel, as well as to the feeder and receiver units directly during rewinding.
The advantages of the Vesna-306 tape transport mechanism include the clear fixation of the cassette on spaced apart supports, which contributes to the constant frequency response when the cassette is turned over and reinstalled.
The electrical part of the tape recorder is made using modern domestic transistors, has tone controls for higher and lower audio frequencies, a dial indicator of the recording level, a switch for the output power of the bass amplifier and a number of other operational amenities.
"Spring-306" is a two-speed, portable cassette recorder designed for recording and playback of speech and music programs from a pickup microphone, radio receiver, other tape recorder and radio broadcast line.
The tape recorder works with a standard MK-60 cassette, two-track recording. The magnetic tape speeds are 4.76 and 2.38 cm/s, the detonation coefficient is 0.4%. The sensitivity of "Spring-306" from the microphone input is 0.3 mV, from the pickup input 150-500 mV, from the radio input 10-30 mV, from the radio broadcast line input 10-30 V with input impedances of 600 Ohm, 400 kOhm, 25 kOhm, respectively. and 10 kOhm. The rated output power of the tape recorder is 0.8 W, maximum 2 W. The coefficient of nonlinear distortion at the linear output is 4%. The operating frequency range at a speed of 4.76 cm/s is 63-10,000 Hz, at a speed of 2.38 cm/s - 63-5000 Hz.
“Spring-306” is powered by six 373 elements, a total voltage of 9 V, or through a built-in rectifier from an alternating current network with a voltage of 127 and 220 V. The dimensions of the tape recorder are 242X242x68 mm, weight with power supplies is 3.7 kg.
CIRCUIT DIAGRAM
The amplification part of the Vesna-306 tape recorder consists of two functional units: a universal amplifier with a high-frequency generator and a recording level indicator and a power amplifier.
The universal amplifier (see figure) is made of five transistors 77, T2, T5, T7, T8. The first two stages of the amplifier are covered by local negative feedback circuits R12 C6 and R20 C9. The sensitivity of the amplifier is regulated by trimming resistor R19, in the emitter circuit of transistor T2, and the recording and playback level by potentiometer R24, connected between the second and third stages of the amplifier. The frequency response of the amplifier in the region of lower audio frequencies in recording mode is adjusted using a frequency-dependent feedback circuit C22, R41, R28, and in playback mode C21, R37, R39, R47 at a speed of 4.76 cm/s and C21, R37, R40, R47 at a speed of 2.38 cm/s. Correction of the frequency response in the region of higher audio frequencies is carried out by the L1C10 circuit, which allows, in recording mode, to obtain an increase in the frequency response relative to the frequency of 400 Hz by 13-15 dB at a frequency of 10,000 Hz at a speed of 4.76 cm/s and at a frequency of 5000 Hz at a speed of 2 .38 cm/s. The depth of high-frequency correction in recording mode is regulated by variable resistor R30, and in playback mode by resistor R29. The output stage of the universal amplifier is assembled on transistor T8 and operates in a mode with a dynamic load, the functions of which are performed by transistor 77. From the emitter of transistor 77, the output signal is supplied to the linear output of the tape recorder and simultaneously in playback mode through capacitor C25 and switch contacts B1-8 to the input of the amplifier power, and in recording mode, through the contacts of this switch, resistor R31 and filter plug L2C7 to the universal magnetic head GU1, and through R51 to the power amplifier, which allows you to listen to the recorded signal while recording.
High-frequency bias is supplied to the head through trimming resistor R10 and capacitor C4. From the output of the universal amplifier, through capacitor C14 and trimming resistor R38, the signal is supplied to the input of the indicator stage assembled on transistor T6 and diodes DZ-D4. Capacitor C16 linearizes the frequency response of the indicator based on the recording current in the region of higher audio frequencies. An M478/3 pointer device with a total deviation current of 100-200 μA serves as an indicator of the recording level and control of the power source voltage. Trimmer resistor R38 calibrates the device to the nominal recording level, and trimmer resistor R49 calibrates the indicator in playback mode at the maximum value of the power source voltage.
The generator of high-frequency biasing and erasing current is assembled on transistors T3, T4. The operating mode of the generator is stabilized by diode D2 and zener diode D1. This made it possible to produce high-quality recording when the supply voltage changes from 5 to 9 V. Trimmer resistor R10 sets the optimal bias current, providing the required frequency response and nonlinear distortion factor of the recording-playback channel. As a rule, the value of the bias current is slightly higher than the optimal value. The frequency of the generated oscillations is determined by the circuit formed by the inductance of the erasing head GS1 and the capacitance of the capacitor SZ. The L2C7 oscillatory circuit prevents the bias current from penetrating into the amplifier circuit. Generator frequency 50 kHz, recording current 0.05–0.1 mA, bias current 1–1.5 mA, erase current 80 mA.
The three-stage power amplifier is designed according to a circuit with an autotransformer output using transistors T9-T12. A negative feedback winding is placed on the autotransformer frame. The use of a separate winding significantly reduces the level of interference when the amplifier is powered from a source with a high ripple factor. Switch B5 is designed to rematch the load of the power amplifier in order to save energy from power supplies. Variable resistor R53 and capacitor SZ0 form a tone control for higher audio frequencies. Thermistor R67 stabilizes the operating mode of the final stage of the amplifier under temperature influences.
The power amplifier is loaded onto the 1GD-40-R-140 head. Winding data of transformers and correction coils are given in the table.
TAPE MECHANISM
The tape drive mechanism of the tape recorder is assembled according to a single-motor kinematic scheme.
Kinematic diagram of the tape recorder "Spring-306"
1 - feed unit; 2 — rewind roller shaft; 3, 4 — rewind rollers; 5 — winding coupling; 6 - spring; 7 — microswitch lever; 8 - microswitch; 9 — winding clutch pulley; 10 — roller of the winding unit; 11 — receiving unit; 12 — bushing, receiving unit; 13 — rubber belt; 14 - flywheel; 15 — support; 16 — lever;
17 — pressure roller; 18 — universal head; 19 — erasing head; 20 - spring; 21 - flywheel; 22 — rewind clutch spring; 23 — rewind roller bushing; 24 — rubber belt; 25 — braking spring; 26 - engine.
In the initial “Stop” position, the feeding node 1 and the receiving node 11 are inhibited by the bar 30, the Lever 31 with the roller 10 of the winding unit is moved away from the receiving node at a bevel e playback slider 28. The pins of the universal head 18 and the erasing head 19, as well as the pressure roller 17 do not protrude beyond the ends b supports 15. Rewind roller 3 is held in a neutral position by limiters V And G rewind pushers 38 and 35. Braking spring 25 is removed from the feed unit. Lever 7 presses the microswitch button 8, turning off the power to the electric motor.
In the playback mode, the playback slider 28 is moved forward, while the roller 17 is pressed against the drive shaft 27, and the magnetic heads are inserted into the cassette, which is additionally pressed against the supports 15 by springs 20. The roller 10 of the winding unit is pressed against the receiving unit, and the braking spring 25 is pressed against supply unit. The brake bar 30 is retracted from the receiving and supply units, and the lever 7 is retracted from the microswitch by the same bar.
The rotation from the electric motor 26 is transmitted by the rubber belt 24 to the flywheels 21 and 14. When winding up, the rotation from the flywheel 21 by the rubber belt 13 is transmitted through the winding clutch pulley 9 and the roller 10 to the receiving unit and then through the sleeve 12 to the cassette.
When you press the “Stop” key, the bar 37 is retracted, releasing the “Play” key, and the mechanism returns to its original position.
In the rewind mode, the pusher 38 stops d
through spring 29 it acts on lever 39 with roller 3 and 4 on suspension 36. The force of the spring connects roller 4 with the feed unit and roller 3 with flywheel 21. Lever 7 is moved away from the microswitch by pusher 38. Rotation from the flywheel 21 is transmitted through rollers 3 and 4 to the feed unit and cassette.
At the end of rewinding, the feed unit and the associated roller 3 with spring 22 stop, and roller 4 with shaft 2 and sleeve 23 pressed onto it continue to rotate. The moment acting on the cassette is limited by spring 22, which presses the end surface a of the roller to the end of the sleeve 23 with a certain force.
In direct rewind mode, rollers 4 and 3 connect the flywheel 14 and the receiving unit. Otherwise, the mechanism works similarly to the rewind mode.
To temporarily stop the tape in playback (recording) mode, press the “Pause” key. In this case, the pusher 34 moves the lever 31 with the roller 10 from the receiving unit and the pressure roller 17 from the drive shaft with the lever 16. In this position, after releasing the “Pause” key, the pusher 34 is held by the tooth and , entering the latch labyrinth. To continue playback (recording), the “Pause” key is pressed again.
The pusher 34 moves forward, while the tooth and , moving along the labyrinth of the latch, stops against the bend And latch 33. When the “Pause” key is released again, the pusher 34, under the action of a spring, returns to its original position, tooth and passes under the clamp, lifting it through the bend And , and the pinch roller and the roller 10 again engage with the drive shaft and the take-up unit, respectively, continuing the previous playback or recording.
The recording mode is set by simultaneously pressing two keys: “Playback” and “Record”. The latter, through lever 40, acts on the type of work switch. Plank 41 protects records from accidental erasure.
When installing the cassette, the tooth To this bar fits into a recess in the cassette, and the stop l stands opposite the bend m lever 40. When you try to press the “Record” key of the bend m rests against the wall l , preventing recording mode from being activated.
Zaporozhye
Since 1972, the cassette tape recorder "Vesna-306" has been produced by the Zaporozhye Electrical Machine-Building Plant "Iskra". At one time, the Vesna-306 tape recorder established itself as one of the best domestic cassette recorders in its class. The tape recorder uses an original CVL with an indirect drive of the drive shaft, powered by a contactless electric motor. It is distinguished from all other cassette CVLs by the presence of 2 flywheels connected by a common belt, which eliminates fluctuations in the speed of the magnetic tape when working in transport and on the go. The design of the rewinding unit with a friction roller eliminates tape breakage and ensures reliable adhesion to the flywheel and to the feed and take-up units during rewinding. The advantages include the clear fixation of the cassette, which makes the frequency response unchanged. The LPM has a write blocking device. The electrical part of the tape recorder is made using modern transistors, has a high-frequency tone, a recording level indicator and power control, an output power switch in two positions and a number of other amenities. Everything described is also relevant for the “Vesna-305” tape recorder, but the fact is that the “Spring-306” tape recorder, according to the designers’ plans, should be the first.Since the fall of 1972, the Vesna-306 tape recorder was also produced by the Perm Electrical Instrument Plant, but they produced about 3,000 devices in total.
"Spring-306" is a two-speed, portable cassette recorder designed for recording and (or) playback of speech or music programs from a microphone pickup, radio receiver, other tape recorder and radio line. The tape recorder works with an MK-60 type cassette, two-track recording. Magnetic tape speeds are 4.76 and 2.38 cm/s, detonation coefficient is 0.4%. The sensitivity of the microphone input is 0.3 mV, the input for the pickup is 150...500 mV, the radio receiver is 10...30 mV, the radio line is 10...30 V. The nominal output power of the ultrasonic sounder is 0.8 W, the maximum is 2 W. The coefficient of nonlinear distortion at the linear output is 4%, on a dynamic loudspeaker, with a rated output power of no more than 5%, with a maximum of 10%. The operating range of audio frequencies at the linear output at a speed of 4.76 cm/s is no narrower than 63...10000 Hz, at a speed of 2.38 cm/s - 63...5000 Hz. The speaker system of the tape recorder consists of a loudspeaker type 1GD-40R. The Vesna-306 tape recorder is powered by six A-373 type elements with a total voltage of 9 volts and retains all parameters, except for a decrease in output power and an increase in nonlinear distortion on the loudspeaker, when the supply voltage is reduced to 5.1 volts. The tape recorder can be powered from a 127 or 220 V electrical network through a built-in power supply. The dimensions of the tape recorder are 242x242x68 mm, weight including batteries is 3.7 kg.
Description of the tape recorder in the magazine Radio No. 8 for 1975. Description of the tape recorder in the TRZ reference book. Scan of the cover from the instruction manual.
-
--
---
--
-
--
-
-
--
-
--
In the 1980s, a tape recorder was the main attribute of a cool guy who could easily throw a party or take the equipment with him on a camping trip. With a “cassette player” you could go out into the yard or take a walk with friends around the area. “The cassette player” was the dream of all the boys of those years...
The tape recorder was a vital part of the non-state culture and non-state economy of the Soviet Union. State culture was conveyed through radio stations, Record televisions and Aurora telephones.
The tape recorder, thanks to the possibility of re-recording, distributed what was not released on records and was not heard on TV - from Vysotsky and Galich to Arkady Severny and Pink Floyd, covering the entire spectrum of music not covered by the Melodiya company.
Household appliances were not cheap. Not cheap - to put it mildly. The average Soviet family prepared for the purchase of a cassette recorder with no less trepidation than, say, for the birth of their first child. 
Money for a shabby cassette player was saved for months, during which all family members, without exception, were engaged in a painful process, which I once described with the strange word “look after.” This process boiled down to regular visits to radio stores.
Although, process is a slightly different word that defines all the action that unfolded in these stores. If you think about it, it was much easier for buyers of those years to make the right choice - the number of products offered at the same time never reached even a dozen.
Nevertheless, in the sales areas of stores, you could always and at any time meet a crowd of gloomy men who huddled around the counter, silently looking at angular radios, massive record players and cassette decks. 
As a rule, each of the men was mentally aimed at one or another product, which he came to look at every day. The whole process took 10-15 minutes, after which one “sort of buyer” was replaced by another. People came and went, but the crowd of curious people almost never thinned.
The seller dominated this exhibition of unfulfilled desires, of course. Salespeople in radio stores of those years were a rather interesting type: dressed in the latest fashion in hundred-ruble imported jeans, they radiated around them a charge of greatness, uniqueness and awareness of their own superiority over mere mortals.
Not paying any attention to the “stayers”, the seller majestically looked through the crowd, examining fragments of trolleybuses, grain vans and panel trucks, barely visible above people’s heads, steadily making their way along the city streets 
Of course, this was not always the case. Occasionally, the doors of the store were opened by yesterday's "stayer", and he did this not cautiously and ingratiatingly, as usual, but in a businesslike manner, confidently and proudly looking at those around him. And immediately everyone around understood that this person would definitely buy something now... 
Portable cassette monophonic tape recorder of the third class "Electronics-302"
Tape recorder "Electronics-302" produced until 1984. The main plant that produced this model was the Moscow TochMash. The Elektronika-302 tape recorder is designed for recording and playing back sound on a 3.81 mm wide magnetic tape placed in an MK-60 cassette.
It was developed on the basis of the unified model “Electronics-301”, differing from it by the use of a new dynamic head 1GD-40 instead of 0.5GD-30, slider volume and tone controls, and a more modern appearance. Due to claims from warranty workshops about the poor quality of the slider adjusters, they were soon replaced with conventional angle adjusters.
Over the years of production, the tape recorder has undergone many changes in the electrical circuit; transistors and a microcircuit were installed in the output stage of the amplifier, and the entire circuit was adjusted. 
Portable cassette recorders "Electronics-321" and "Electronics-322.
The tape recorders were developed on the basis of the tape transport mechanism of the Vesna-305 apparatus. In the new tape recorders, the clutch drive of the receiving unit has been modernized, guide posts for small-sized cassettes and clamps for the magnetic head unit in the vertical direction have been installed.
The "321" series tape recorder uses a built-in electronic microphone, manual and automatic recording level adjustment, fine-compensated volume control, and a 1GD-40 type loudspeaker. 
Cassette tape recorders “Electronics-323/1” and “Electronics-324/1”.
Novovoronezh plant Aliot. 1981 and 1987 models
Household wearable monophonic cassette recorders "Electronics-323" and "Electronics-324"- designed for recording and playback of audio tracks in any conditions. The built-in mains power supply, autonomous power supply from batteries or a car battery makes the tape recorders universal in use. Among the service amenities, the models have an ARUZ and a signal output.
According to the electrical circuit and general design, the devices are the same, the only difference is the absence of a built-in microphone in the Elektronika-324 tape recorder. 
Portable tape recorder “Electronics-211 stereo”.
Novovoronezh plant "Aliot". Issued since 1983.
Portable stereo cassette recorder ""Electronics-211 stereo"" designed for recording or playing sound programs from a microphone, receiver, audio pickup, TV or other tape recorder.
It provides manual and automatic adjustment of the recording level, an auto-stop, a noise reduction device, separate tone controls, and a line consumption meter.
you, two built-in microphones. 
Tape recorder "Electronics-311-S"
Novovoronezh plant "Aliot" - Production since 1977
Tape recorder "Electronics-311-S" provides tone control for high and low frequencies, automatic and manual control of the recording level of all inputs, a temporary pause in tape movement, erasing recordings, and the ability to visually and audibly control the recorded signal.
For high-quality listening and expanding the stereo base, the device is equipped with two external speaker systems. The tape recorder was produced in four configuration options: 1. With a power supply and a microphone. 2. Without power supply and microphone. 3. With a microphone but without power supply. 4. Without power supply and microphone. In configuration No. 1, the price of the “Electronics-311S” tape recorder is 289 rubles. 
Portable cassette recorder "Spring-202"
Zaporozhye electrical machine-building plant Iskra. Serial production of the model began in 1977.
Second class monophonic cassette recorder "Spring-202" (UNM-12) Unlike the produced cassette tape recorders of the second and third classes, it has an increased output power of the low-frequency amplifier, a noise reduction system, and manual and automatic adjustment of the sound recording level.
Price - 200 rubles. 
Stereo cassette recorder "Spring-201-stereo".
Zaporozhye EMZ Iskra. Production of the model since 1977.
Record player "Spring-201-stereo" works on its own loudspeaker as monophonic, and on external speakers as stereophonic. The band of reproduced sound frequencies on external speakers is 63...10000 Hz. The rated output power of the amplifiers for their own speakers is 0.8 W, for remote speakers 2x3 W.
In anticipation of the 1980 Olympic Games, from the beginning of 1978 the attribute “Olympic” was added to the name of the tape recorder. The cost of the tape recorder has increased accordingly. Until 1978, the plastic case of the tape recorder was covered with decorative wood-like film on the sides and back at the top, and since 1978 it began to be produced only in plastic, with the addition of aluminum design. 
Portable cassette recorder "Spring-202-1"
Zaporozhye electrical machine-building plant Iskra. Production of the tape recorder began in 1983.
Cassette monophonic tape recorder ""Spring-202-1"" type UNM-12 has increased output power, noise reduction system, manual and automatic recording level adjustment. The level is controlled by a dial indicator, and the magnetic tape consumption is carried out by a three-decade mechanical counter.
The operating audio frequency range of the tape recorder is 63...12500 Hz. The tape recorder is powered by 6 373 elements.
Price 195 rubles. 
Portable cassette recorder 2nd class "Spring-207-stereo"
Zaporozhye electrical machine-building plant Iskra. Vol. 1982
The tape recorder has a switchable noise reduction system, automatic switching of the LPM to stop mode when the power is turned off and when the tape in the cassette runs out or due to a cassette malfunction.
There is automatic level adjustment when recording. There are peak overload indicators, an electret microphone, a magnetic tape consumption meter with a memory device, and a magnetic tape type switch.
The device is powered by 6 373, 7 A-343 batteries or from a 220 V network. via built-in rectifier. 
Second class stereo cassette tape recorder “Spring-211-stereo”. Zaporozhye electrical machine-building plant Iskra. Issued since 1978.
A tape recorder similar in appearance, design and parameters under the brand ""Russia-211-stereo"", produced since 1979 by the Chelyabinsk Production Association - "Flight".
The tape recorder was developed on the basis of the “Spring-201-stereo” model and differs from it in its external design and the presence of such operational amenities as; complete auto-stop, as well as control of the recording level using peak indicators on LEDs. There is a noise reduction device and a tape consumption counter.
The tape recorder can operate on the built-in loudspeaker "2GD-40" or on external loudspeakers "6AS-503", each of them has 2 heads of the 4GD-35 type. Powered by mains power or eight 373 elements. 
Portable cassette recorder "Spring M-212 S-4"
The production has been established since 1989 by the Zaporozhye Vesna tape recorder plant and the Iskra electrical machine-building plant.
The tape recorder was also called ""Spring-212-4S"" and ""Spring-212 S-4"". It allows you to record onto magnetic tape and play back music and speech programs from various sources of sound programs through the built-in speaker.
It has an auto-stop when the tape in the cassette runs out or is jammed, control of the recording level using dial indicators, as well as peak indicators, control of the supply voltage using a dial indicator, a switchable ARUZ system, a tape type switch, a three-decade tape consumption counter in the cassette, with a device memory, a switchable noise reduction system and a device for expanding the stereo base, improving sound quality. The tape recorder is powered by mains power or 8 373 elements.
Price 365 rub. 
Cassette stereo tape recorder "IZH-303-stereo"
Izhevsk Motor Plant (JSC Aksion). Issued since 1986.
In the tape recorder "IZH-303-stereo" Provides manual and automatic adjustment of the recording level, auto-stop when the tape in the cassette breaks or ends, there is a tape consumption meter with a memory device, dial indicators of the recording level, and a noise reduction system.
You can connect external speakers and TDS-9, TDS-6 headphones to the device. The power supply is universal: from 6 A343 Salyut-1 elements or from the mains. Rated output power - 2x1 W. The operating range of sound frequencies is 63...10000 Hz.
Price 285 rub. 
Portable cassette recorder on the substation "Elegy-301"
Voronezh plant Elektropribor. Issued since 1986.
In the tape recorder "Elegy-301" There is a built-in electret microphone, an ARUZ system, a switchable noise reduction system, and tone controls for low and high frequencies.
Using the same electrical circuit and design, but with a slightly different design of the front panel, tape recorders of the "Agidel-301" and "Legend-301" brands were produced by different factories in the country.
The price of the “Elegy-301” model is 184 rubles. 
Portable cassette recorder "Tom-303"
Tomsk Radio Engineering Plant. Serial production since 1982.
In the tape recorder "Tom-303" A switchable noise reduction device is provided to reduce the noise level during playback.
The "Tom-303" tape recorder allows you to record and playback while moving, when carrying and during transportation. This ensures the preservation of basic electrical parameters and sound quality.
The tape recorder is powered from the mains, through the built-in power supply, or from batteries. Since 1985, the plant has produced the Tom M-303 tape recorder with a different front panel design and a wide range of case colors. 
Cassette tape recorder "Belarus-301"
Record player "Belarus-301" allows you to record phonograms from a microphone, receiver, TV, broadcast line, recorder, electric player or other tape recorder. The recording level is controlled using a dial indicator.
You can connect an external amplifier with a speaker system or a small-sized speaker system with a resistance of about 4 ohms to the tape recorder.
The range of recorded and reproduced frequencies is 63...10000 Hz. The rated output power when operating on an external speaker is 0.8 W. Duration of operation from a set of elements is 15 hours. Power consumption from the network is 5 W. 
Portable cassette recorder "Karpaty-202-1"
Prykarpattia radio plant. PA "Karpaty". Ivano-Frankivsk Tape recorder production has been established since 1977
Class 2 monophonic cassette recorder ""Karpaty-202-1"" (UNM-12) was produced simultaneously with the model "Spring-202-1" and according to its electrical circuit and design, nothing from
it is no different.
In turn, both tape recorders are a modernization of the “Vesna-202” and “Karpaty-202” tape recorders, differing from them only in the loudspeaker grille and minor changes in the electrical circuit. The range of audio frequencies of the tape recorder at the linear output is from 63 to 10000 Hz, and those reproduced by the loudspeaker are 100...10000 Hz.
The tape recorder is powered by six 373 elements. The rated output power of the amplifier is 1 W, the maximum is 2 W.
Price 200 rubles. 
Portable cassette recorder "Karpaty-205-1"
Prykarpattia radio plant. Production since 1987.
The tape recorder was produced on the basis of the model “Spring-205-1” and, with minor changes in the circuit, is completely similar to it. 
Cassette recorder "Parus-201-stereo"
Saratov plant "Banner of Labor". Production started in 1983.
Record player "Parus-201-stereo" has the following functions: recording and listening to stereo and mono programs through an external amplifier in stereo and mono modes, or through the built-in monitor speaker in mono mode; the ability to connect stereo phones and an external speaker or speaker; built-in noise suppressor; autostop of all modes; three-decade tape consumption counter.
The tape recorder has universal power supply: from a 220 volt network via a built-in power supply, from an external 12 volt DC source or from 8 A-343 elements. Frequency range: 40...14000 Hz; Maximum amplifier output power 2.5 W: 
Stereo cassette recorder - "Parus M-213S". Saratov plant "Banner of Labor". Production since 1991.
Record player "Sail M-213S" can work in a stand-alone version as a monophonic one for playing back soundtracks through its own built-in speaker, or in a stationary version as a stereophonic one with two speakers. The range of recorded and reproduced sound frequencies on chrome oxide magnetic tape is not less than 63...14000 Hz.
Rated output power for own speakers is 1 W, for external speakers 2x1 W, maximum output power is 2x3 W. 
Portable cassette recorder "Proton-401", "Proton-402" and "Proton-402MT". Kharkov radio plant "Proton" Production since 1980.
In the tape recorder "Proton-401", "Proton-402" and "Proton-402MT" ARUZ, auto-stop at the end of the tape in the cassette, a dial indicator of the recording level and a built-in microphone are provided. Powered by 6 A-373 elements and the network, in this case the output power doubles.
The device has an automatic recording level system, tape type switch, and high-frequency tone control. The range of operating audio frequencies at the linear output is 40...12500 Hz, at the loudspeaker 200...7000 Hz. Rated output power - 1.2 W.
Since the beginning of 1985, on the basis of this tape recorder, a two-speed, four-track tape recorder of the Proton-402MT type was produced. It is designed to play “Talking Book” phonograms for people with vision loss. The electrical circuit and design of the model, except for the track switch and the second speed - 2.38 cm/sec - are similar. 
Tape recorder "Proton M-412"
Kharkov radio plant Proton. MG production since 1988.
Portable cassette recorder class 4 "Proton M-412" assembled on transistors and microcircuits. It is intended for recording or playing back phonograms on magnetic tape A-4207-3B or similar in standard MK-60 cassettes. Number of recording tracks - 2.
The range of sound frequencies effectively recorded and reproduced through the LV is 63-10000 Hz, the frequency range reproduced by the internal loudspeaker 1GDSH-3 is 150...7000 Hz. The power supply is universal, from a 220 volt network or from 4 A343 elements. Rated output power 0.5 W. Power consumption from the network is 8 W.
The price of the model is 125 rubles. 
Portable cassette transistor tape recorder class 4 - “Legend-404” Arzamas Instrument-Making Plant named after. 50th anniversary of the USSR. Class of 1981
""Legend-404""- Class IV portable cassette recorder with universal power supply. The tape recorder can be used as a voice recorder. The range of recorded and reproduced sound frequencies at higher speeds is 63...10000 Hz, and at lower speeds 80...3150 Hz. Power supply voltage is 9 volts from 6 A-343 batteries or from the mains through a separate power supply.
The rated output power of the amplifier is 0.5 W, maximum 0.8 W. The tape recorder has a built-in electret microphone, an ARUZ system, connectors for installing a special radio cassette operating in the range of only LW or only MW and allowing you to turn the tape recorder into a radio tape recorder.
Since 1989, the tape recorder has been produced under the name "Legend M-404". In general, the model was a long-liver; production of the tape recorder was completed in March 1994.
The price of the tape recorder "Legend M-404" is 139 rubles. 
Portable stereo cassette recorders “Spring M-310S”, “Rus M-310S”, “Rus M-310-1S”, “Spring M-310S1”
Zaporozhye plant Iskra (“Spring M-310S”, “Spring M-310S-1”)
Ryazan Instrument Plant (Rus M-310S", "Rus M-310-1S")
Production of the M-310S models since 1987, M-310S-1 since 1990.
All tape recorders have the same design and are built on the basis of the " "Spring-310-stereo"". The difference is in the external design and minor changes in the electrical circuit.
The tape recorder has the ability to: automatically stop the tape recorder when the magnetic tape in the cassette runs out or the cassette malfunctions; automatic recording level adjustment; recording level control using peak indicators on LEDs; stereo balance adjustments; separate tone control for higher and lower frequencies; use of two types of magnetic tapes; automatic switching of tape type.
The noise reduction system reduces the level of noise during playback. Nutrition; from 6 elements 343 or from the AC mains via an external power supply. The cassette recorder is made of impact-resistant polystyrene. The set includes 2 cassettes of the "MK-60" type. 
Portable cassette recorder "Rus-207-stereo"
Ryazan State Instrument Plant. Serial production of the device began in 1985.
Cassette recorder ""Rus-207-stereo"", was produced on the basis of the “Spring-207stereo” model produced in 1982. Different factories of the USSR, according to the same design and electrical circuit then
similar cassette recorders were produced with the names:
""Tarnair-207-stereo"" and ""Rhythm-203-stereo"".
Playback in monophonic mode through the built-in speaker, in stereophonic mode - through external UCU and external speakers Operating frequency range at the linear output - 40...14000 Hz, when using magnetic tape - A-4312-3B. The nominal output power of the speaker is 1 W, maximum 2 W.
Retail price 265 rubles 
Cassette tape recorder "Sonata-211"
Velikolukskoye PA Radiopribor. Released in 1980.
The model has an ARUZ and separate HF and LF tone controls, a tape consumption meter, and a dial indicator of the recording level
and power status, built-in electret microphone, pause mode. For the first time in domestic tape recorders of this class, a tape type switch was used, and the possibility of recording on chrome dioxide tape was provided. The tape recorder is equipped with a retractable carrying handle.
The speaker model has a 2GD-40 loudspeaker installed. You can connect an external speaker with a resistance of 4 Ohms to the device. Power is supplied from the mains, through a built-in stabilized power supply or from batteries.
Rated output power is 0.7 W, when operating from the mains or from a car battery 1.5 W. The operating frequency range at the linear output is 63...12500 Hz, when recording on chrome dioxide tape 63...14000 Hz. The frequency range reproduced through the loudspeaker is 100...10000 Hz. Power consumption from the network is 10 W.
Price 260 rubles. 
Portable stereo cassette recorder-set-top box “Sonata MP-213S”. Velikolukskoye PA Radiopribor. The production of the set-top box tape recorder began in 1989.
Stereo pre-line output set-top box tape recorder ""Sonata MP-213S"" designed for recording and playback of stereo and monophonic phonograms. In standalone mode, the model works with the built-in loudspeaker as monophonic, and with the connection of stereo phones or a stereo amplifier with speakers as stereophonic.
The tape recorder is powered from six A-343 elements, or from the mains through a built-in power supply. The first releases of tape recorders were called “Sonata-213-stereo” 
Cassette portable monophonic tape recorder - “Romantic-306”
Gorky plant named after Petrovsky. Model production since 1979.
The model was produced for a short time by the Petropavlovsk Plant named after. Kirov but without the index ""M"". The carrying handle was either rigid, made of duralumin and plastic, or like a shoulder strap.
Operating frequency range at the linear output is 63...10000 Hz, loudspeaker - 100...10000 Hz. Rated output power 0.5 W, maximum, when operating from the mains 4 W.
In 1985, the Petrovsky plant began production of a modernized model - "Romantic M-306-2"
Portable cassette monophonic tape recorder of the third class "Electronics-302"
The Elektronika-302 tape recorder was produced until 1984. The main plant that produced this model was Moscow TochMash, but I think that the tape recorder was produced by some other
plant, its logo on the third tape recorder. The "Electronics-302" tape recorder is designed for recording and playing back sound on a 3.81 mm wide magnetic tape placed in an MK-60 cassette.
It was developed on the basis of the unified model “Electronics-301”, differing from it by the use of a new dynamic head 1GD-40 instead of 0.5GD-30, slider volume and tone controls, and a more modern appearance. The rated output power of the tape recorder amplifier is 0.8 W, the operating audio frequency range is 63...10000 Hz. The tape recorder is powered by six 343 A elements through a power supply inserted into the battery compartment and from an alternating current mains voltage of 127/220 V. The dimensions of the tape recorder are 315x225x90 mm, weight 3.5 kg. Due to claims from warranty workshops about the poor quality of the slider adjusters, they were soon replaced with conventional angle adjusters.
Over the years of production, the tape recorder has undergone many changes in the electrical circuit; transistors and a microcircuit were installed in the output stage of the amplifier, and the entire circuit was adjusted.
Cassette tape recorder IZH-302.
Izhevsk Motor Plant. Released in 1982. The tape recorder was created on the basis of the Elektronika-302 tape recorder, taking into account modernization. It is designed for recording or playing back sound using magnetic tape placed in an MK-60 cassette. The IZH-302 tape recorder consists of 3 main components housed in a plastic case: a tape transport mechanism, an amplifier and a plug-in power supply. The tape recorder allows you to: record from an MD-64M microphone, radio or television receiver, audio amplifier, radio broadcast line, electrophone and other tape recorder; playback through the built-in speaker, audio amplifier, external speaker, headphones - TDS-3. The recording level is controlled using a dial indicator. During playback and rewinding, the indicator shows the supply voltage. The tape recorder provides a temporary stop of the media during recording or playback, which is carried out by pressing the temporary stop key; when the same key is pressed again, the movement of the media is resumed. Turning off recording or playback is done by pressing the stop key and raising the cassette until the pressed keys are reset; when you press the same key again, the cassette is raised. The button located on the microphone allows you to remotely control the tape recorder on and off, which makes it possible to use it for reporting purposes. The duration of operation from one set of fresh elements of type A-343 is at least 10 hours, with cyclic operation no more than two hours a day.
Portable cassette recorders "Electronics-321" and "Electronics-322.
The tape recorders were developed on the basis of the tape transport mechanism of the Vesna-305 apparatus. In the new tape recorders, the clutch drive of the receiving unit has been modernized, guide posts for small-sized cassettes and clamps for the magnetic head unit in the vertical direction have been installed. The "321" series tape recorder uses a built-in electronic microphone, manual and automatic recording level adjustment, fine-compensated volume control, and a 1GD-40 type loudspeaker. The devices can be powered from an alternating current network, from the vehicle’s on-board network, and from seven A-343 elements. The Elektronika-322 tape recorder differs in that instead of a built-in one, it uses an external microphone of the MD-64M type. Main technical characteristics of MG: Magnetic tape - A4203-3. Belt speed - 4.76 cm/s. Detonation coefficient ±0.35%. Maximum output power, W - 1.8. Operating frequency range on LV, Hz 40...10000, loudspeaker 100...8000. Dimensions, mm - 296x220x75. Weight, kg 3.8."
Cassette tape recorders "Electronics-323/1" and "Electronics-324/1".
Novovoronezh plant Aliot. 1981 and 1987 models
Household wearable monophonic cassette recorders "Electronics-323" and "Electronics-324" are designed for recording and playing audio tracks in any conditions. The built-in mains power supply, autonomous power supply from batteries or a car battery makes the tape recorders universal in use. service amenities, the models have an ARUZ and a signal output. According to the electrical circuit and general design, the devices are the same, the only difference is the absence of a built-in microphone in the Elektronika-324 tape recorder. Since 1987, the plant has produced modernized Elektronika-323-1 models "" and ""Electronics-324-1"" differed little from the basic ones. In some series of modernized MGs, a microcircuit was installed in the pre-amplifiers - "K118UN". Sometimes the models were partially similar to tape recorders - ""Electronics-321/322" "".
Portable tape recorder "Electronics-211 stereo".
Novovoronezh plant "Aliot". Issued since 1983.
The portable cassette stereo tape recorder "Electronics-211 stereo" is designed for recording or playing sound programs from a microphone, receiver, pickup, TV or other tape recorder. It provides manual and automatic adjustment of the recording level, an auto-stop, a noise reduction device, separate tone controls, and a flax consumption meter.
you, two built-in microphones. The model's power supply is universal: from 8 A-373 elements, the vehicle's electrical system or an AC voltage of 220/127 V.
Tape recorder "Electronics-311-S"
Novovoronezh plant "Aliot" - Production since 1977
The tape recorder complies with GOST-30838-76 and TU-838.005. It is designed for recording and playing stereo and mono phonograms on standard MK-60 cassettes from any source of low-frequency signals. The tape recorder provides tone control for high and low frequencies, automatic and manual control of the recording level of all inputs, a temporary pause in the tape movement, erasing the recording, and the ability to visually and audibly control the recorded signal.
For high-quality listening and expanding the stereo base, the device is equipped with two external speaker systems. The tape recorder was produced in four configuration options: 1. With a power supply and a microphone. 2. Without power supply and microphone. 3. With a microphone but without power supply. 4. Without power supply and microphone. In configuration No. 1, the price of the “Electronics-311S” tape recorder is 289 rubles.
The low-frequency power amplifier is assembled using GT-703 transistors or K174UN-7 microcircuits
Portable cassette recorder "Spring-202"
Zaporozhye electrical machine-building plant Iskra. Serial production of the model began in 1977.
The monophonic cassette recorder of the second class "Vesna-202" (UNM-12), in contrast to the cassette tape recorders of the second and third classes produced, has an increased output power of the low-frequency amplifier, a noise reduction system, manual and automatic adjustment of the sound recording level. The recording level is controlled by a dial indicator, and the remainder of the magnetic tape is monitored by a three-decade mechanical counter. The operating audio frequency range of the tape recorder is 63-10000 Hz. The Vesna-202 tape recorder is powered by six elements - 373. Recording and playback can be done when the supply voltage changes within 5.1...9.3 V. The rated output power is 1 W, the maximum is 2.2 W.. Detonation coefficient - 0.4%.
The external dimensions of the tape recorder are 296x276x81 mm, its weight is 4.2 kg. Price - 200 rubles.
Stereo cassette recorder "Spring-201-stereo".
Zaporozhye EMZ Iskra. Production of the model since 1977.
The Vesna-201stereo tape recorder (UPM-14) is a stationary and portable cassette sound recording device of the second class with universal power supply. The tape recorder operates on its own loudspeaker as monophonic, and on external speakers as stereophonic. The band of reproduced sound frequencies on external speakers is 63...10000 Hz. The rated output power of the amplifiers for their own speakers is 0.8 W, for remote speakers 2x3 W. Power supply 12 volts from 8 elements 373 or from an AC mains 127/220 V through a separate power supply. Power consumption 30 W. The dimensions of the tape recorder are 367x224x100 mm. Its weight is 4.7 kg. In anticipation of the 1980 Olympic Games, from the beginning of 1978 the attribute “Olympic” was added to the name of the tape recorder. The cost of the tape recorder has increased accordingly. Until 1978, the plastic case of the tape recorder was covered with decorative wood-like film on the sides and back at the top, and since 1978 it began to be produced only in plastic, with the addition of aluminum design.
Portable cassette recorder "Spring-202-1"
Zaporozhye electrical machine-building plant Iskra. Production of the tape recorder began in 1983.
From July 1, 1983, GOST 24863-81 was applied to the Vesna-202 tape recorder, or, to put it simply, the tape recorder became not the second class, but the second group of complexity, and therefore it was renamed the Vesna-202 model -1"". It did not undergo any noticeable design or circuit changes, except that the brushless electric motor was replaced by a commutator one, although both were subsequently installed. The monophonic cassette recorder "Vesna-202-1" type UNM-12 has increased output power, a noise reduction system, manual and automatic
How to adjust the recording level. The level is controlled by a dial indicator, and the magnetic tape consumption is carried out by a three-decade mechanical counter. The operating audio frequency range of the tape recorder is 63...12500 Hz. The tape recorder is powered by 6 elements 373. Recording and playback is carried out when the supply voltage changes from 5.1 to 9 V. The maximum output power is 2 W. Detonation coefficient 0.4%. Dimensions of the tape recorder 296x276x81 mm, weight 4.2 kg. Price 195 rubles.
Portable cassette recorder 2nd class "Spring-207-stereo"
Zaporozhye electrical machine-building plant Iskra. Vol. 1982
The tape recorder is designed for recording stereophonic speech and music programs onto magnetic tape and their subsequent playback in monophonic mode through a built-in amplifier with a loudspeaker and in stereophonic mode through a microphone. The LPM uses a contactless electric motor BDS-0.14M. There is a switchable noise reduction system, automatic switching of the LPM to stop mode when the power is turned off and when the tape in the cassette runs out or due to a cassette malfunction. There is automatic level adjustment when recording. There are peak overload indicators, an electret microphone, a magnetic tape consumption meter with a memory device, and a magnetic tape type switch. The device is powered by 6 373, 7 A-343 batteries or from a 220 V network. via built-in rectifier.
Second class stereo cassette recorder "Spring-211-stereo"
Zaporozhye electrical machine-building plant Iskra. Issued since 1978.
A tape recorder similar in appearance, design and parameters under the brand name "Russia-211-stereo" has been produced since 1979 by the Chelyabinsk Production Association - "Polet".
The "Vesna-211-stereo" tape recorder was developed on the basis of the "Vesna-201-stereo" model and differs from it in its external design and the presence of such operational amenities as; complete auto-stop, as well as control of the recording level using peak indicators on LEDs. There is a noise reduction device and a tape consumption counter. The tape recorder can operate on the built-in loudspeaker "2GD-40" or on external loudspeakers "6AS-503", each of them has 2 heads of the 4GD-35 type. Power supply from the mains or from eight elements 373. In 1979, the tape recorder was produced with the name Spring-211-1-stereo, no different from the base one.
Portable cassette recorder "Spring M-212 S-4"
The production has been established since 1989 by the Zaporozhye Vesna tape recorder plant and the Iskra electrical machine-building plant.
The tape recorder was also called "Vesna-212-4S" and "Vesna-212 S-4". It allows you to record onto magnetic tape and play back music and speech programs from various sources of sound programs through the built-in speaker. It has an auto-stop when the tape in the cassette runs out or is jammed, control of the recording level using dial indicators, as well as peak indicators, control of the supply voltage using a dial indicator, a switchable ARUZ system, a tape type switch, a three-decade tape consumption counter in the cassette, with a device memory, a switchable noise reduction system and a device for expanding the stereo base, improving sound quality. The tape recorder is powered by mains power or 8 elements 373. Price 365 rubles. "
Cassette stereo tape recorder "IZH-303-stereo"
Izhevsk Motor Plant (JSC Aksion). Issued since 1986.
The tape recorder is designed for recording speech and music sound programs on A4205-ZB tape in the MK-60 cassette and their subsequent playback. It provides manual and automatic adjustment of the recording level, auto-stop when the tape in the cassette breaks and runs out, has a tape consumption meter with a memory device, dial indicators of the recording level, and a noise reduction system. You can connect external speakers and headphones TDS-9, TDS-6 to the device. The power supply is universal: from 6 A343 Salyut-1 elements or from the mains. Belt speed 4.76 cm/s. Detonation coefficient: ±0.35%. Rated output power - 2x1 W. The operating range of sound frequencies is 63...10000 Hz.
The relative level of noise and interference with UWB is -56 dB. Dimensions 442x217x116 mm. Weight 5 kg. Price 285 rub.
Stereo tape recorder "Agidel MP-302-S"
Ufa Instrument-Making Software Production of the tape recorder began in 1990. The tape recorder is monophonic up to the line output. Stereo programs can be listened to on stereo phones. The design and technical characteristics of the tape recorder are similar to the Elegy-301 tape recorder, but their circuits are different.
To be continued...
Tape recorder, tape recorder!
What he hears is what he writes.
_______________________
N. Bromley
Memories from distant childhood
From the gramophone to the player it’s very short, very close. I already remembered the gramophone. These amazing things were next to us, we lived with them. Player. The sound from the player was wonderful, different from the sound of a gramophone. No hissing, no need to turn the crank. We now have a Sadko radio tape recorder at our house. The device is amazing. Huge wooden body, sparkling lightning trim, green light bulbs. It could play vinyl long-playing records. It was great and very cool for that time. Slowly a collection of modern music collections appeared. You can listen to all this at home with your family, at a celebration, at a birthday, and even at a wedding. We young people wanted to go outside with music. At that time, many of my peers had portable radios; we called them “transistors.” VEF is every guy's dream. They caught our radio amateurs on medium waves, and there was decent music there. This kind of music was played by “radio hooligans” who had tape recorders. This is not a record collection. You can register both Vysotsky and the Beatles as a magician.
And here is a new era. Cassette recorders appeared. It was a real revolution. The Vesna tape recorder became a favorite of young people. How I dreamed about this. And during the holidays after eighth grade, my parents gave me a hundred rubles for a VEF radio. The receiver is cool, but I didn’t really want it anymore. I went to visit my grandmother. There I convinced her that a tape recorder was better than a transistor, and she gave me another hundred rubles. I already had two hundred rubles, the money was solid and the most important thing was that it was already enough to purchase a tape recorder. They were enough to fulfill my cherished dream. I dreamed of “Spring”, I was simply delirious, I drew my cherished dream everywhere. I had several cassettes with recordings, but no magician. What to do? There were practically none of them in stores, shortage! What should I do?
You can buy a tape recorder in Zaporozhye at the Blue Screen company store; they were produced there and sold there. I get up at five in the morning, take a boat along the Dnieper, and a couple of hours later I’m there with my friend. We are sitting under the store, waiting for it to open. At exactly eight o'clock we are the first to fly in.
Girl, we urgently need to check the Vesna-306 tape recorder. We'll take it.
- Look here. Complete set: five cassettes, microphone, batteries, cords. Recording works, playback too. Guys, pay 202 rubles to the cashier and this beauty is yours.
A minute later he was in my hands, but I still didn’t believe my eyes. I also have a tape recorder.
That evening I went out for a walk with a new magician. Spring-306. How glad I was. A dream come true.
Reviews
I have a gramophone, but the spring has burst, I have to take it to a watchmaker
I’m not going to, there are no associates to help.
Everyone wants attention and something tasty, but they can’t do anything, they either forgot how to do it, were either hurt by the Internet, were born this way, or failed at work or study. And I myself don’t have time for everything. The Japanese wanted to take the gramophone to their museum.
This is my father’s front-line gramophone, it can be restored and started.
But it turned out that at the border, any thing that has been over 30 years old is taken away as a relic.
And then, of course, to the landfill.
As one poet wrote, “I won’t give it to you!”
-These are the remnants of the worst eras of Russianness and Russia.
The relic will disappear, sure enough! - And I don’t trust the local museums; everything is rotting in their storage rooms..
The daily audience of the Proza.ru portal is about 100 thousand visitors, who in total view more than half a million pages according to the traffic counter, which is located to the right of this text. Each column contains two numbers: the number of views and the number of visitors.