The Washington herald., 1922-06-11
PORTABLE RADIO
IN DEMAND
ies
:. DURING SUMMER
Canoe and Camping Out
:" fits Are Growing
#ta
80 In Favor.
CARE MUST BE USED
Compact Form Multiplies
Difficulties in Manu-
facture.

Confederation of two factors wfll
assist the prospective purchaser OF
q radiophone set this summer. One
Is the tested efficiency Of the set
purchased. the other the reliability
OF the manufacturer and the dealer
from whom the set Is purchased.
The demand during the mex.
three months will be for radiophone
sets which are both reasonable in
price and portable. A similar de-
mand was made in the phonograph
Industry several seasons ago, and
still persists. Manufacturers placed
on the market Photographs which
could be easily carried on canoe
trips, and which were light and sub
stantial. Many monographs are
now built into suitcases, which are
as convenient to carry about as the
portable typewriter. The phono-
graph. although It consists in part
Of delicate mechanism. is readily
adaptable to any space-saving ar
rangement
Radio More Intricate.
Not SO the radiophone. Although
II has been built into small spaces
only the most reliable sets are thor
oughly efficient II the apparatus IL
too compact A wireless receiving
set comprises a great number OF
wires In addition to vacuum tubes.
condensers, variometers, vario-
couplers and so forth. These in
struments must all be correctly ad-
justed with one another for best
results in receiving. A broken wire,
loose binding post, shattered vacuum
tube. or shorted grid leak are some
OF the possible sources of trouble.
Certain sets on the market are
thoroughly reliable. Each part or
the apparatus has been designed
and built in with ample protection
from rough usage The sets are
practically fool-proof and so Ionr
u adjustment of one knob or pos
sibly two is all that is necessary
In operation, ordinary care will in
sure reception OF broadcasted pro-
grams
Many Sets WORTHLESS.
There are on the market today
certain radio receiving sets which
are worthless. They will not re-
ceive efficiently and are wasteful
or an operators time In trying to
make adjustments for what he has
been told the set was capable. For
example. the statement is frequently
made that a range of fifty miles 10
guaranteed 1t is a peculiarity OF
a radio receiving set that regardless
OF its perfection. atmospheric con-
ditions may render the best set use
less How much more worthless Is
a set which has not been carefully
constructed
Reliable manufacturers are not
TO blame for shortcomings of radt.
sets upon which the best available
skin and workmanship has been
done Radio science today forbids
4 guarantee of positive results from
radio sets which the public insists
must sell for $50 or less. Radio
signals are transmitted through
space, there are no connecting wires
between transmitter and receiver.
and there Is no way OF thoroughly
irflling the average person in the
operation of his set until he has
learned the ways of tuning by ex-
perience.
Difficulties to Be Overcome.
NO practical method is now in
general use which will eliminat.
Btatic during a broadcastinR con.
sert' nor prohibit a person from de-
tuning his neighbor. There Is No
other instrument or houseboI5 a.