Radio Tubes Live 4 1/2 Years!
The average life of a radio tube in a typical radio receiver
is now about 4 1/2 years, according to the RCA License Laboratory.
An ordinary lamp costing fifteen cents lasts 1,000 hours, while
a radio tube costs about ninety cents and lasts 6,000 hours.
Thus, we pay just about the same per hour of use for radio tubes
as for lamps.
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Auto Radio Gets European Stations!
The first short-wave automobile radio capable of receiving
European broadcasts directly has been announced by Philco Radio
and Television Corporation. The chassis of this set has been
locked and sealed internally to prevent its use on police bands
in violation of some state laws. Domestic short-wave stations
can be tuned in when reception is poor on the broadcast band
because of summer static.
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Stencils Are Cut by Facsimile!
Experiments at Lehigh University showed that stencils could
be cut directly on an RCA facsimile receiver simply by feeding
in ordinary mimeograph stencils in place of the customary white
paper and carbon sheet. Hundreds of copies of weather maps.
line drawings or any kind of printed matter sent by facsimile
can thus be made within a few minutes of reception.
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Gas Flame Operates Radio Sets!
Now on the market in England is the perfected Milnes thermoelectric
generator, which operates from an ordinary gas supply and provides
A, B and C power for a radio receiver. The unit sells for approximately
$20, and operates a radio receiver at a cost of about 2/3 cent
per hour on the basis of prevailing gas rates in New York City.
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Washington Gets First Booster Station!
FCC authorization has been granted for a new Washington,
D. C. radio station broadcasting on 1,310 kc. from two widely
separated transmitters having powers of 250 watts and 50 watts
respectively. This is the first time a local synchronous booster
amplifier of this nature has ever been authorized. It solves
the problem of securing full coverage of an area with low power.
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Police Carry Portable Radiophones!
Complete radio transmitting and receiving equipment having
a range of several hundred feet is now available to special
New York policemen. The unit is mounted on a wide belt supported
by shoulder straps, so that it can be worn under the coat, with
the microphone hidden behind the vest. Evidence picked up by
the officer is broadcast to other policemen at a receiver in
the vicinity, where it is recorded.
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