JPRS ID: 8855 WORLDWIDE REPORT TELECOMMUNICATIONS POLICY, RESEARCH AND DEVELOPMENT

• Document Type: CREST
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• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00850R000200040021-2
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• Document Page Count: 17
• Document Creation Date: November 1, 2016
• Sequence Number: 21
• Content Type: REPORTS

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TE~ i POLICY,
RESEARCH RND DE~JELOPMENT

~ JANURRY 1988 CFOUO 2r80) i 0 F 1
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JPFiS L/8855
9 January 1980
.
Worldwide Re ort
p
~
TELECOMMUNfCATiONS POLICY,
~ RESEAR~H AND DEVELOPMENT
CFOUO 2/80)
FBI$ FOREIGN BROADCAST INFORMATION SERVICE.
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JPR5 L/8855
9 January 1980
WORLDWIDE REPORT
TELECOMMUNICATIONS POLICY, RESEARCH AND DEVELOPMENT
(FOUO 2/80)
~ CONTENTS PAGE
ASIA
THAILAND
Brief s
Satellite TV Equipment 1
USSR
Remote Control Operation of Rediffusion Broadcast Stations
(~I.L. Fel'dman; VESTNIK SVYAZI, No 10, 1979)............ 2
_ ?
Multiple Signal Transmission on 'Orbita' Sys~em
(E. Ya. Chekhovskiy; VESTNIK SVYAZI, No 10, 1979)....... 7
WEST EUROPE
INTERNATIONAL AFFAIRS
Franco-German TV Broadcast Group Created
(Pierre Langeruex; AIR ET COSMOS, 1 Dec 79) 11
FRANCE
First 'Aerosolar' TV Broadcast Relay Inaugurated
(Pierre Langereux; AIR ET COSMOS, 1 Dec 79) 13
- a - [III - ~TW - 140 FOUO)
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THAILAND
BRIEFS
SATELLITE TV EQUIPMENT--The Nippon Electric Company [NEC] of Tokyo on
17 October announced that it had received an order from the Bangkok Tele-
vision Broadcasting Campany (BBTV) of Thailand for satellite communica-
tions earth stations and television broadcasting equipment totaling 1.5
billion yen. The Thai Gover:iment plans to exp~nd its television network
nationwide using the communications satellite (Parapa), owned by the
Indonesian Gover~ent; whicr orbits abc?ve the Indian Ocean. Thailand now
has only four privately-owned TV static~ns in Bangkok which serve only
Bangkok and its suburbs. The order includes 11 satellite communications
earth stations for transmitting and receiving TV waves to and from the
satellite (Parapa) and TV broadcasting equipment for nine stations includ-
ing one at Chiang Mai. The earth stations and TV broadcasting equipment
~ are scheduled to be delivered in September, next year. [OW250347 Tokyo
MAINICHI SHIMBUN in Japanese 18 Oct 79 Morning Edition p 6]
CSO: 5500
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USSR
REMOTE CONTROL OPERATION OF REDIFFUSION BROADCAST STATIONS
Moscow VESTNIK SVYAZI in Russian No 10, 1979 PP 26-28
[Article by M. L. Fel'dman~ engineer at the Leningrad City
, Radio Relay Network: "An Equipment Complex for the Control and
~ Management of Rediffusion Broadcast Stations: The Effect of Auto-
mation"]
;
~ [Text] A new complex for the direction and control of rediffusion
i broadcast (PV) stations has been in operation for ~he last few
yeaxs at the Leningrad City Radio Relay Network (LGRS). To
begin with, this apparatus was installed in the suburbs, which,
despite the considerat~le remoteness of the network's equipment,
~ allows for the absence of a permanent staff and insures a quali-
i ty presentation of all three programs and the efficient direction
and control of the net's operation in the suburbs.
~ As far back as 1971, engineers at the LGRS production laboratory
suggested using the City Radio Relay Network's KRR-M (cable radio
relay) high-frequency channel as a remote control/remote signal-
ing (TU-TS) channel. Since the new apparatus for rediffusion
broadcast utilize~ the frequency compression principle, the ap-
plication of the City Radio Relay Network's hi~h-frequency chan-
~ nel has made possible the precise control of the status of any
' reference repeater station (OUS), even those considerably re-
moved from the central rediffusion broadcast station (TsSPV).
As a result, a completely automated rediffusion broadcast net-
; work with its own central repeater station (TsUS) has been con-
, structed at the present time in the operating suburb. The cen-
; tral repeater station does not have permanent-duty personnel,
since all control and direction is accomplished from the central
rediffusion broadcast station. Apart from the utilization of
' the high-frequency channel in conjunction with the new equipment
complex, we axe also adopting a UMT-3 bridge amplifier on th~
, remote control/remote signaling lines. With its help, for ex-
; ample, reference repeater stations are being directed and con-
; trolled in the farthest re~rioved regions of new construction~
= where the length of the connecting line (SL) exceeds 30 km.
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In building this equipment~ workers at the Central Design Bu-
reau of the USSR Ministry of Communication (its developers)
took into aceount pY�inciples that were used ear_�lier at the LGRS.
For example, the cha;lgeover to a radial-node scheme using in-
termediate amp~ifiers; the control over threshold values for
parameters of the distributing mains--feeder line direction and
control (UKFL); the coupling of the automatic outdoor speaker
engagement (AVUD) and UKFL systems; and the presence of a sys-
tem for the automatic control of transformer substations (AKTP),
etc.
The operational personnel at the LGRS are trying to realize all
the virtues that are built into the complex of direction and
control equipment. The information carrying capacity of the
City Radio Relay Network has essentially been expanded~ thanks
+o the adoption of both time and frequency compression. At pre-
sent it is possible to transmit up to 30 commands and receive up
to 30 reference repeater station status replies along a single ;
connecting line. At the same time~ it is possible to con~trol
the amplifiers, transmitters and the radio receiver at the ref-
erence repeater station on one remo+e control/remote signaling '
channel. The receiver can be connected to any amplifier chan-
nel or transmitter; the reserve audio line can be connected at
a distance; the transformer substation can be switched from one
reference repeater station to another, which previously was not
possible. We simultaneously receive status replies on the amp-
lifiers and ~ransmitters at the reference repeater station, on
the intruder alarm, the fire alarm signal response, the disen- ~
gagement of the power-exchange mains, etc. However~ under our !
conditions, the information-carrying capacity af the remote con- '
trol/remote signaling system is still not exhausted.
The possibility of evaluating along a single connecting line the
feedback control from both ampl.ifiers of the reference repeater
station and, as we have already put into practice, from the ~
power-exchange mains allows us to increase the effiGiency of ser- '
vice and the quality of the net's performance. It is also pos-
sible along this single line to evaluate the feedback control
from the transmitters (with the aid of automatic comparators in
the control and correction unit rack~ the operation of which is
very reliable).
The operation of the TU-0.~ repeater amplifiers which go into
the complex at the central rediffusion broadcast station insures
the possibility of raising the quality and reliability af the
equipment's operation with little loss of time and labor. These
= amplifiers, possessing considerable output power, also have very
good electrical characteristics (a wide passband~ a low coef-
ficient of non-linear distortion and low levels ~f integral
noise). They have simple construction and~ consequently, grea~
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~ ease of repair. The sma11 number of electromechanical relays, .
on the whole, has increased the reliability of the automated
equipment sy,stem. _
~ A modernized TU-0.4~x2M amplifier has been made to higher stan-
dards with high-quality asse~r~bly work. Its single drawback is
the absence'of an "input-output" compaxator circuit, widely
us~d at pr~sent in rediffusion broadcast equipment.
At~'the same time, operation of the complex of new rediffusion
broadcast`equipment has exposed certain of its sYiortcomings
which lower its efficiency of operation. Our collective is con-
stantly working to eliminate the errors in the equipment. For
example, t here had been no acoustic unit in the amplifier sta-
tion control panel (PWS) nor the technical requirements ~'or it.
For an amplifier we adopted the standaxd PS-ATS [further expan-
sion not provided] amplifi?r~ developed at the LGRS for program
broadcast lines. Room for the amplifier was found inside the
panel (+60V power supply)~ while the cores stand atop the upper
panel. Everything, however, is still not done. The interfer-
ence of the acoustic control circuits on the readings of the
sampling pulse meter;has not been eliminated. It would be desir-
able to provide for the remote engagement and disengagement of
the TU-0.4 rebroadcast amplifier. Furthermore, power supply
circuits for the rebroadcast amplifier's outFut relays are not
sepaxate. When one of them is damaged, there is a risk of losing
the program at the output busbars. When measuring or tuning the
remote contrnl/remote signaling channel, provisions should be
made for the continuous sending of commands or of a separate
frequency through some reference repeater station.
At our enterprise we have developed and introduced a syst~m for
the TUS-K [further expansi.on not provided] rack by which, when
there is a line emergency in the remote control/remote signaling
system, the racks' common acoustic emergency signal goes off.
This layout significantly speeds up locating the malfunction. We -
have equipped the panel with a cord and plug for observing the
shape of the signal on the oscillograph panel. This is very
convenient~ since during the tuning and measuring processes one
may effectivel,y control ~the "filter entry" point of the TUS-K
rack. We have also made an acoustic device to signal telephone
calls from the reference repeater station's duty man on the re-
- serve remote control/remote signaling line. When the TUS-K rack
was installed, s-~rong interference was noted in the racks' con-
trol circuits. After decoupling elements were installed in
- these circuits, the effect ceased. Such finishing work has al-
lowed us to improve trie TUS-K rack's service while at the same
time increasing its operating efficiency.
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Control and Correction Unit racks,
TUS-K and Amplifier Station Control
Panel installed at the Central Re-
diffusion Broadcast Station
The peculiaxities~ virtues and shortcomings of the output switch-
ing and. control rack have been studied in detail. For example~ '
when operating in the "local measurement" mode on the output
switching and control rack, we noticed that the "emergency re-
lease" button did not work when the racks' common "program emer-
gency" signal goes off. We managed to eliminate this shortcom-
ing by introducing decoupling diodes in each of the BKK's (con-
trol and correction units). While connecting the second output
switching and control rack we also exposed interference in the
control circuits from the panel. The installation of decoup- !
ling elements in the control and direction circuits in both ~
~ output switching and control racks has made it possible to re-
move this negative factor. ~
While operating the TUS-I rack we likewise improved certain cir- '
cuits. For example, it turned out that the bypass mechanism
possessed low reliablitiy. I t required a detailed selection of ,
124 transistors in counter stages and a precise selection of the
grid bias. In the LGRS production laboratory another simpler ,
and more reliable bypass mechanism was suggested which is now ~
successfully undergoing experimental operation. The TUS-I rack's
switching mechanism possesses low interference immunity. As a ,
result, there are frequent "dropouts" (especially at distant '
reference repeater stations) in the operation of the switches ,
when transient impulse noise of significant amplitude (more than
30 B) appears. A partial way out of the situation was found--a
matching of the dividers in the switching mechanisms' shapers.
However, this is not always effective.
Some of the manufacturing plant's unfinished work was discover-
ed in the process of servicing the apparatus. Inaccuracies in
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-
the documentation and differences between the diagrams and the
actual installation hamper the work. The equipment's execu-
tion is lo~r-quality: all the racks we have received which make
up the complex have required further adjustment. This is a
consequence of the fact that the manufac-turers do not tune each
type of apparatus in the complex; only separate units and as-
semblies are subject to adjustment. At the LGRS~ practice has
shown that all shortcomings can be eliminated. However~ this
further imp~ovement requires an additional outlay of labor and
lowers the effectiveness of the new equipment. One wants to hope
that the manufacturing enterprises will take the operational
notes into considera~ion and will undertake measures that con-
tribute to eliminating the defects. ~
At the pr esent time, the experimental section o.f the central re-
diffusion broadcast station and more than 30 percent of the
Leningrad city and suburb reference repeater stations are cover-
ed by the equipment in the complex. In summing up the experien-
ce accumulated at the I~GRS in the process oi operating the new
equipment, one might say that its introduction contributes to
raisirig the technical level of the n.Qtwork for all three pro-
grams and, in the end, contribute s to improving the quality of
thP programs broadcast to the subscriber. The new system makes
it possible to consolidate the equipment at the central redif-
fusion broadcast stations, and to move up to a new qualitative
step in the operation of three-program rediffusion broadcastin~
in major cities. The positive experience of operating the sta-
tion equipment will allow the LGRS in the future to actively
introduce the new complex's equipment for the direction and con-
trol of rediffusion broadcast stations.
~$'9512~
COPYRIGHT: Izdatel'stvo "Svyaz'," "Elektrosvyaz'~" 1979
9512
cso: 5500
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USSR
MULTIPLE SIGNAL TRANSMISSION ON ~'ORBITA'' SYSTEM
Moscow VESTNIK SVYAZI in Russian No 10, 1979 Pp 32-33
[Article by E. Ya. Chekhovskiy, laboratory chief at the Scien-
tific Research Institut~ of Broadcasting: "Compression Equip-
ment for the Transmission af Newspape~r-Column Images and Radio
~ Broadcast Programs on the 'Orbita' System"]
[Text] A broad network of land-basad "Orbita" receiver stations
has been created for the broadcast of Central Television pro-
grams by means of satellite communications. With the help of -
these stations, the television programs are transmitted with the
necessary time shift to the distant and little-accessible re-
gions of' the Far North and the Far East. The network of "Orbita" ~
stations is the basis also for the reception of other forms of
information~ in particulax, newspaper-column phototelegraphy "
and radio broadcast programs.
i
The network of "Orbita" receiving stations encompasses the ad- ~
ministrative centers where at present decentralized printing ;
points for the central newspapers already exist or will be start- ;
ed up. In corine~tion with this, the network of "Orbita" stations ~
may also serve as the basis for the creation of a satellite sys-
tem for.the reception of the central newspapers.
;
No less pressing is the task of conveying radio broadcast pro- '
grams. '
It is already possible to utilize the existing systems for these ;
ends. Owing to the fact that the traffic capacity of one radio
broadcast program chaxinel or a channel for the transmission of !
newspapers (by phototelegraphy) is many times smaller than the i
traffic capacity of a television (TV) chanriel, the channel may ;
be packed with these types of information, that is~ they may be
transmitted along with television.
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~
Ai .
The main problem which is to be solved during development of
equipment,~or the transmission of radio broadcasts and news- -
paper-colNmn images to gether with television is the search for
the best method of compressing the signals--best from the point
of view of minimal noi se from the additional signals in the
television,transmission. The possible methods of signal com-
pression in a common transmission channel (N. V. Talyzin,
Z. Ya. Ka~tor, et al. "Transmission of Newspaper Columns on
the 'Orbita' System," ELEKTOSVYAZ', No 5, 1969) are divided
_ into two large groups--time and frequency compression methods.
Frequency .compression methods were chosen for the transmission
of radio broadcasts and the central newspapers, since addition-
a1 compre'ssion of the "Orbita" system's TV trunk by the time
me thod is not possible.
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Equipment rack for the transmis-
sion of central newspapers and one
radio broadcast program along with
television
~ .
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In the output mode the TV signal spectrum occupies the fre-
quency range from 50 Hz to 6 MHz; the newspaper image signal
spectrum is from 312 kHz to 552 kHz; and the radio broadcast
signal spectrum is from 50 Hz to 10 kHz. In order to consoli-
date such signals in a common broadcast channel~ subcarrier
frequencies were chosen which are frequency modulated by the
radio broadcast and column irnage output signals and which carr;~
them into a region of frequencies exceeding 6 MHz.
On the receiving side, this makes ~t possible to separate the
television signal from the frequency modulated subcarrier sig-
nals of the radio broadcast~and newspaper column channels with
the aid of filters. The subcarrier frequencies are subsequent-
ly demodulated and, thus, the original radio broadcast and
phototelegraphy signa].s are separated out.
The method indieated for combining the signals is the simplest
in its technical realization and has still more advantages. For
example, the combination of the signals is already tak ing place
upon input to the satellite channel and, therefore, the trans-
mission of radio broadcasts and newspaper images does not re-
quire the installation of separate transmitters and ~eceivers.
The apparatus for sepaxating out t he radio broadcasts and th~
newspaper columns is set up only at those stations at which the
indicated signal is received. At the remaining network telP-
vision stations it is not necessary to install additional equip- -
ment. This simplifies the organization of the radio broadcast
channels and the transmission of newspaper columns, and makes
it possible to build up the network of such channels as much
as is necessary.
According to the given principle of TV channel compression~
equipment for the transmission of the central newspapers and
one channel of radio broadcast along with television has also
been developed at present and produced commercially. '
The appaxatus is designed and built as one standard rack (fig 1).
The basic technical parameters of the radio broadcast trans-
mission channel are the following: a transmitted frequency
bandwidth of 50-10,000 Hz; frequency response �1 dB; output
signal immunity from psophometric interference >57 dB; non- -
line ar distortion