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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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