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Document Creation Date: 
December 22, 2016
Document Release Date: 
May 19, 2011
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Publication Date: 
December 11, 1956
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PDF icon CIA-RDP80-00809A000600120036-9.pdf311.17 KB
Sanitized Copy Approved for Release 2011/05/19: CIA-RDP80-00809A000600120036-9 STAT Sanitized Copy Approved for Release 2011/05/19: CIA-RDP80-00809A000600120036-9 Sanitized Copy Approved for Release 2011/05/19: CIA-RDP80-00809A000600120036-9 No 2, 1955, Moscow, shown that in the greater part of the USSR the period of greatest sleet formation occurs from November to :larch, the deposits attaining maximum thickness and hardness from December to January. attenuation of the circuits. Thus, the attenuation in an aerial 4-mm copper line for a frequency of 1,43 kc with a 25 mm thick sleet cover on t?re conduc- tors is over 6 times greater than the dry-weather attenuation of the same A deterioration in meteorological conditions leads to variations in the meteorological conditions. In order to compensate for the increase in transmission losses caused by the sleet deposits on the auxiliary repeater equipment (VUS) [vspomagatel' nyye usiiitel'nyye stantsiil been provided. The installation of VUS-12 equipment on aerial toll lines designed for 12-channel high-frequency service is currently under development. The ini- tial experience with the operation of the new equipment fully confirmed its applicability to multichannel toll lines. Even partial installation of type VUS-12 equipment on one of the multichannel lines in the Leningrad toll district made possible an economy in transmission time of 17,611 channel- hours during the fall and winter season. The auxiliary ;repenter equipment has the following operating peculiar- ity: it is3 (Connected most of the time but must be ready for immediate inclusion in the line. Furthermore, the equipment does not receive special, daily operational maintenance and must be repairable ox. location. These conditions make special demands on type VU--12 equipment concern- ing its continuous operation, exclusion of possibilities of accidental mal- functioning, complete mechanical and electrical reliability, and the operat- ing reliability of all components and parts. The equipment must be designed for ready assembly. Type VUS-12 equipment meets contemporary technical standards and has wood operational and technical characteristics. However certain important ortcomings have already become apparent in its operation even after a relatively short operational period. These shortcomings can be classifled as omissions in the development of the equipment and as purely production quality defects. Power to type VUS-12 equipment is supplied from a central battery by Mans of the "conductor-ground" scheme. The S isation of this scheme solves very neatly such important questions as to the possibility of separ- ately energising the odd and even amplifiers, increasing the operational :ength of the central-battery circuit, and increasing the spacing of VUS equipment points between feeder repeater points. However experience has shown that the above scheme of supplying power to VUS equipment points com- pletely breaks down when utilised on aerial toll lines located near electri- fied railroad lines. The effect of the latter on the power-supply circuit Sanitized Copy Approved for Release 2011/05/19: CIA-RDP80-00809A000600120036-9 Sanitized Copy Approved for Release 2011/05/19: CIA-RDP80-00809A000600120036-9 of the VUS equipment completely disrupts the normal operation of the equip- ment. A "conductor-conductor" scheme for supplying power to VUS equipment has been tested on one of the toll trunks in the Leningrad toll district. The conversion to this scheme is not difficult to carry out. The follow- ing chaneaa must be made in the wiring[ of the feeder points (of the feeder reactor rack) (Figure 1): in the power transmission rack the circuit breaker P2 must be disconnected, and the lead from terminal IIH9 of the feeder reactor rack to the central-power transmission rack must also be dis- connected; terminal I1B9 of the feeder reactor rack comb must be connected to the negative of the plate battery (-206 v). The fallowing modifications must be made in the VUS-12 equipment (Figure 2): the leads connecting term- inals IIA and IA8 of the reactor rack comb to the central-power receiving 7 rack must be disconnected and insulated; the ground leads to the No 1 and 2 amplifier housings must be disconnected; the "ground" terminals must be con- nected to the central-power receiving rack (terminal IIA7 must be connected to the Found " terminal of No 2 amplifier horsing, and terminal IA8 to the "ground terminal of No l amplifier housing): and the bypass relay PTT which shunts the condensers C1 and C2 must be disconnected. However, though it permits the operation of VUS-12 equipment on lines immediately adjoining electrified railroad lines, the "conductor-conductor" scheme in its present form not only reduces the maximum operating distance over which centraliopower supply can be utilized but also makes impossible the operation of more than o"e remotely-energized repeater point in any given repeater district by depriving the VUS equipment of its emergency power supply. Moreovar, the tilization of the last-named scheme without special modifications in th design of the equipment will place a dangerous (posi- tive) potential on the housings of the amplifiers when the equipment is op- erated, while the third housing will be grounded. The utilization of the "conductor-conductor" scheme also changes the situation in the line circuit. Whereas V th the "conductor-ground" scheme the feed voltage presents a hazard only to those who are working on grounded poles, the utilization of the "conductor-conductor" scheme extends the haz- ard to all poles on the line. Furthermore, when the "conductor-ground" scheme is used 'he accidental interchanging of the conductors results in the unwanted operation of the amplifier of the other group, which can be easily detected, whereas when the "conductor-conductor" scheme is used such an interchanging will make the equipment inoperative and the fault cannot be detected immediately. It can be seen that the central=battery operation of VUS equipment points needs more development work. ' In our opinion it would be worthwhile to make provision in VUS equip- ment currently being produced for simple conversion from the "conductor- ground" to tae "conductor-conductor" power supply scheme. When 2 VUS equipment points are provided in a given repeater district one of them can be equipped with an ind*pendent power supply, e.g., directly from a-c networks (in areas adjoining electrified railroad lines there is as a rule a reliable source of commercial power). However the power supply must be remotely controlled. Sanitized Copy Approved for Release 2011/05/19: CIA-RDP80-00809A000600120036-9 STAT Sanitized Copy Approved for Release 2011/05/19: CIA-RDP80-00809A000600120036-9 Lptsd +---Conductors to be disconnected ---Conduetc-s to be connected Figure. J --- C$ UCtO-e t be co viectedCftd Sanitized Copy Approved for Release 2011/05/19: CIA-RDP80-00809A000600120036-9 STAT Sanitized Copy Approved for Release 2011/05/19: CIA-RDP80-00809A0006 STAT Linear Systems with Lumped Parameters], 1954, Moscow, Svaz'izdat, 370 pages, 8.45 rubles. Discusses the frequency bands used in communications signalling and the properties of linear systems with lumped parameters -- dipoles, quadrip-,les, electrical filters, and equalizing quadripoles. Approved by the Main Admin- istration of Educational Institutions of the Ministiy of Communications USSR as a textbook for the higher communications schools. Levitin, Ye. A., Supergeterodin [Superheterodyne], No 200, 1954, Moscow- Leningrad, Popular Radio Library, Gosene-goizaat, 112 pages, 1.60 rubles. Present the fundamental principles of the physical processes occurring in superheterodyne receivers and describes standard schematics for the sep- arate sages of such receivers. The book is intended for radio amateurs who are familiar with the operation of the simplest receivers and have some do- it-yourself experience in this field. "Giprosvyaz'? State Institute for Research and Development of Communica- tions Equipment, Ministry of Communications USSR, Rukovodstvo po proektir- ovaniyu radiotranslatsionnykh sete1 [Manual for the Planning of Program Serv- ice Networks], 1954, Moscow, Svyaz'izdat, 151 pages, one insert. The manual is intended for use in the planning of 2-wire and 4-wire program service facilities for urban, workers', and rural settlements. It gives instructions on the procedure to be followed in carrying out field survey work, schematics for the construction of program service networks for 500 w transmitting and receiving equipment for various distributions of the load in the program service sector, and production blueprints for the con- struction of program service facilities using 500 and 10 w equipment. Technical Administration, Ministry of Communications USSR, Tekhnika svyazi: Ap'aratura abonentskogo telegrafa [Communications Technology: Sub- scriber 'T'elegraph Equipment], a symposium (with appended schematics folder), IS54, Moscow, Svyaz'izdat, 112 pages, 12 inserts with schematics, bound in a folder, 4.65 rubles. The symposium describes manual and automatic private telegraph exchange equipment. Discusses the broad general questions touching on the organiza- tion of telegraph subscriber service, compares the more important indexes of various types of switching equipment, discusses the new principles introduced with automatic telegraph equipment, and gives a general description of type ATR-10/20 and ATR-30/300 manual and type !~TA-50 automatic telegraph systems. Technical Administration, Ministry of Communications USSR, Tekhnika svyazi: Apparatur uplotneniya simaetrichnykh kabeley (tips K-24) [Communi- cations Technology: Type K-24 Carrier Equipment for the Compositing of Simplexed Cables], 1954, Moscow, a symposium, Svyaz'izdat, 75 pages, one insert, 2.20 rubles. Gives the fundamental principles of type K-24 equipment concerning op- ?rating principles, ^the electrical characteristics of the channels, some equipment units, design data, and the principles of designing group [swdula- tion] equipment. Gives data on simplexed cables and discusses the design of tell facilities for K-24 equipment installation. The symposium in intended for engineering and technical personnel engaged in the design, construction, and operation of toll cable circuits on which type E-24 equipment is to be used. Sanitized Copy Approved for Release 2011/05/19: CIA-RDP80-00809A000600120036-9 Sanitized Copy Approved for Release 2011/05/19: CIA-RDP80-00809A000600120036-9 Mints, B. S. Indikatory urovnya v radioveshtaniya [Transmission Level Indicators for Radio Broadcasting Applications], 1954,,Moscow, lectures on communications technology, Technical Administration, Ministry of Communica- tions USSR, Svyaz'izdat, 35 pages, one ruble. The lectures are intended to supply workers in radio broadcasting maintenance shops and stations with the necessary,minimum of information on the design and operation of measuring instruments for application in the visual control of transmission levels in radio broadcasting. The specifica- tions which must be ueet by instruments of this type are also discussed. Orlov, M. S., Pupinizatsiya sel'skikh podzemnikh linii radiofikatsii [The Loading of Underground Rural Programme Service Lines], 1954, Moscow, Svyaz'izdat, 56 pages, 80 kopeks. Describes loading systems used on program service lines and gives simplified methods for their calculation. The pamphlet is intended for engineers and technicians engaged in the design, construction, and operation of underground rural programme service lines. Rastegayev, V. V., Rabota uchastkovo nadsmotrshtika gorodakoy radio- translatsionnoy seti [The Work of Section Supervisors on Local Programme Service Networks], 1954, Moscow, Svyaz'izdat, 12 pages, 15 kopeks. The author is a section supervisor on the Saratov programme service network and has repeatedly won first place in socialist competition and the distinction of "best in profession." He draws his material from his produc- tion experience. Sanitized Copy Approved for Release 2011/05/19: CIA-RDP80-00809A000600120036-9 STAT