SOVIET RADIO AMATEURS SERVE THE NATIONAL ECONOMY

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00809A000600340128-2
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 3
• Document Creation Date: December 22, 2016
• Document Release Date: August 16, 2011
• Sequence Number: 128
• Publication Date: August 30, 1950
• Content Type: REPORT

Sanitized Copy Approved for Release 2011/08/17: CIA-RDP80-00809A000600340128-2
COUNTRY
SUBJECT
HOW
PUBLISHED
WHERE
PUBLISHED
DATE
PUBLISHED
LANGUAGE
INFORMATION FROM
FOREIGN DOCUMENTS OR RADIO BROADCASTS CD NO.
I
C REPORT1
CENTRAL INTELLIGENCE AGENCY
ASSIFICATION CONFIDENTIAL
G?URr1ULJ1 i iHL
Scientific - Radio, radio amateurs
Monthly periodical
Moscow
Tan 19,49
Russian
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Radio engineering cont_nues to increase its scope to i-ndicated iel the
of the national economy. The significance
hibition
results of the Radio Correspondence Ex . As cumpared with pr -
Seventh
the number of exhibits shoving the introduction of radio
vious exhibitions, greatly increased. On
methods in other fields of the national economy has display are devices which make itpossible
a oisture ofegthen,
metallic determine st in ore,
test the quality oY fabric dyes , detect, the quality of the machined
thickness of scale in steam boilers, determine
surface of articles, etc. small. This
Despite this variety, the number of similar exhibits is very
indicates the richness of cteatiVe,'+,hbught,in, our radioc,8diateurs - It' ia. no ,e-
ly. a
aggerati0a to.aay.thatLthengitslenot;etoce aannotbe0apnliedna-ecoflgeous where
some?.fgrm of radio engineering techniques
Take, for example, the problem of measuring grain moisture. Nowadaysb-
there are instruments for measuring the moisture of grain and other d?9
stances. Among the successful devices of this type is the pra;tical apppa at SUCh ems
made mi. loit, a radio amateur from Krasnodar. d,daannd. variousrfinished goods
as determining moisture in the ground, ,
not as yet beenn fully solved. Existing methods are either :complicated
have ,
expensive, or not sufficiently accurate.
To measure the moisture of wood, for example, a piece of given dimensions
is cut off the t-iard or log, weighed, dried for 8 to 10 hours in a special dry-
ing eabinet and then weighed again. It is obvious that such a method not only
n m~ighte
intechniques
requires a greathod f time and wastes wood, butudes not
the
moisture of
eliminate these drawbacks.
The apparatus built by A. P. Kissel' in Nizhniy Tagil and P. M. Trifonov
in L'voV are other examples of the succesefful use of radio metho into the or issel'
built n apparatus tc detect iron objects which accidentally fall into i& they simple.
moving on the conveyer belt to the crushers.' its working principle
CLASSIFICATION
Sanitized Copy Approved for Release 2011/08/17: CIA-RDP80-00809A000600340128-2
DATE OF
INFORMATION 1949
DATE DISTJJA?ag 1950
NO. OF PAGES 3
SUPPLEMENT TO
REPORT NO.
THIS IS UNEVALUATED INFORMATION
 Sanitized Copy Approved for Release 2011/08/17: CIA-RDP80-00809A000600340128-2
The conveyer belt on which the ore is carried runs inside a coil foaming part
of the oscillatory circuit of a high-frequency generator. If any iron object
falls into the ore, the inductance of the coil varies during its passage through
the coil, producing a variation in the frequency of the generator. This fre-
quency change is registered by an indicator -- an ordinary radio receiver tuned
to the generator frequency -- which gives the proper signal and stops the con-
veyer.
Comrade Trifonov's apparatus for measuring boiler scale operates in the fol-
lowing manner. A metallic insulated plate is placed close to the inside well
of the boiler or pipe. This plate, together with the wall, forms a capacitor
which is part of an oscillatory circuit of a high-frequency generator. As scale
forms on the boiler walls, the capacitance of the capacitor changes, causing
a change in the generator frequency. It is then possible to estimate the thick-
ness of the layer of scale by the degru~ of change in the generator, and to take
proper steps to clean the boilers.
Possibilities of utilizing radio engineering methods are, of course, not
limited to the above apparatus. Such methods can be used for registering and
measuring pressure, rate of movement of steam or gas, thickening, thinning and
deformation of various parts, sorting objects according to dimension or mate-
rial, determining the density of solutions, etc.
The utilization of photocells opens great possibilities, such as checking
the quality of fabrics (device made by A. A. Varypyev, a radio amateur in Gor'-
kiy), or their degree of bleaching (N. B. Alekseyev, Ivanovo City). Photocells
can also be used for counting or sorting objects on a conveyer, checking accu-
racy of manufacture of various parts for automatic contra] of machines, and many
other purposes.
It is, of course, possible to use a photocell to construct a "light tele-
phone" '_n cases where laying a cable or overhead line is difficult and the use
of radio communication is not advisable.
Another field in which the ingenuity of the radio amateur can be employed
profitably is that of electrical measurements of nonelectrical quantities.
Intensive research is being conducted in all branches of our national economy
on development, of automatic control in production processes. Such control,de-
mands not only measurement of such nonelectrical quantities as temperature,
pressure, stress, velocity, but transmission of the results to a remote loca-
tion, such as a dispatching point.
A manometer, for example, indicating the steam pressure in a boiler, must
be about 10 meters from the boiler. The steam pressure acts upon the trans-
mitting element, which is an electrical device capable of changing its'prope*-
ties under the action of mechanical pressure. The voltages at the terminals
of the transmitting elements are proportional to the magnitude of the pressure.
Since these pressures are usually very small, they are first delivered to an
amplifier, the output