The Carbon County news. [volume] (Red Lodge, Mont.) 1924-1931, 1925-11-19

fected by changes IN temperature OF
in other local conditions. Thus, wher
such a crystal is used to control the
output of radio transmitter, that
transmitter may be depended upon to
maintain the same frequency, or
wayelength, at all times.
While this peculiar oscillating prop
erty of certain crystals has long been
known, it is only in the last few years
that practical uses for it have been
developed. During the last six months
the use of the quartz crystal has been
so successful on the Westinghouse
shortwave transmitter, that it was
decided to control of the Westinghouse
stations in the same manner.
If all stations were to be controlled
+ by these crystal oscillators, it is be-
lieved that very large amount of in
! reference would be eliminated. Any
one who has logged stations regularly
knows how much some stations will
change on wavelengths from night to
night. When stations are broadcast
ing on wavelengths which are as close
together as they are in the United
States, even small change from the
allotted wavelength will cause consid-
cradle interference.
These quartz crystals are entirely
different from, and must not be con-
fused with the crystals used as de-
tectors in receiving circuits.
.
/ Women vs.. Men as Radio Entertainers
During the last year or so, radio
magazines throughout the United
States have conducted discussions as
to whether or not so many women
/ should take part in the presentation
of radio programs. Many listeners
expressed their opinions on the sub
ject, and many good arguments "pro"
and icon" have been published.
The General Electric station K0A
at Denver, Colo, conducted preten-
tious broadcasting meet and asked for
the listeners preferences concerning
the men and women entertainers on
the program. Replies were received
from several Canadian provinces and
from twenty-three states, and they
showed that the men and women en-
tertainers shared equally in popular
ity. Thirty per cent Of the replies re-
ceived were stritcly neutral, and the
remaining seventy per cent were
equally divided between the two sexes.
O. G. M. G. says: Il have 1875
feet Of " inch copper ribbon which
/ intend to use as an antenna. One
friend says however, that the ribbon
is not as good as solid copper wire for
winter use. Which should I use?n
Anes.-The copper wire is inferior
to hte copper ribbon as far as radio is
concerned. In winter however, the
ribbon will hold more ice and sleet
than the wire, and is likely to break
down sooner.
Ok. M. N. says: Il am building
four-tube set using UV199 Radio
irons. IL one rheostat is used for con-
trolling the filaments, what should be
it's resistance?"
Ans.--A rheostat with resistance
of from 10 to 20 ohms would be salts
factory.
@. e. E. P. says: "When opened
the lid of my 5-tube reflex set the
other day, there was flash in my first
tube, and it burned out. The hinge
on the top of my cabinet binds little,
and there is considerable vibration
when the top is opened. Could this be
responsible for burning out the tube !?
Even after the tube had burned out, it
would flash up occasionally when |
moved the top of the cabinet"
Ans.-The vibration made by bind
ing hinge undoubtedly caused the fila
ment to sway enough to touch the
grid. This could cause the filament to
burn out and act in the manner you