Evening public ledger. [volume] (Philadelphia [Pa.]) 1914-1942, 1922-04-20
No. 4. Whas VIII L, Cost for. a Set?

SHouio nave Oeen the nfSt one uiss
cussed In this series on radio. What.
then. will It cost to install q radio set
to receive these radio broadcasts1
The answer Is necessarily indefinite.
Anywhere from s. to $3.50. It will
depend entirely on what you want to
get and your location.
First, you will have to understand
that there are two great general divi.
sions among receiving sets. There 10
the type of Get that uses q piece Of
mineral. or crystal. to receive through.
There 10 the type Of Get that uses a
specially designed incandescent light.
known as an audion valve, or bulb, to
receive through. .
The bulb Is by all odds the most Of.
fcient-from thirty to several hundred
times AS efficient. That Is to say, in
sert first crystal and then bulb
In the same station and the bulb will
make the phones give out signals so
parison. And the bulb will enable you
to hear stations that would not make
the slightest sound through the piece Of
mineral.
There is another aspect Of this. Most
pCoUtC WIN y touAO coS "nhs
one that will do away with the phones
and give the music and speech through
a horn. known as loud speaker or
one of those phonograph attachments
which make your standard box serve ~
loud speaker.
1t Is to be understood in the first
place that any one who wants such
results must positively use the bulb
type of receiver. The crystal type can
not be used with a loud speaker with
any satisfaction. Why, then, you will
ask. bother about the crystal type at
all?
Well. the crystal set has its uses.
II you are within about FIVE miles Of
a powerful broadcasting station and
want the music and speech for your.
self alone, simple crystal set will
answer as an amusement. IT you are
more than five miles away from the
sending station. you might az well give
up all thoughts OF using crystal de-
tector.
Turning to the bulb type We strike the
expense. For the simplest type OF set,
spend quite tidy sum, even II you buy
the parts separately and assemble the
set yourself. There are certain things
that are essential and they all cost
money.
Here IL just q list Of the necesi-
ties with approximate prices. Pardon
the technical names Of the things; YOU
needn't bother yet to learn what the,
mean It 10 enough to know that yot
have to have them 20 90 to get genera
idea Of the cost. This set Is for th'
best 'hook up" to receive the majorit,
Of broadcasting stations which send OF
a SOC. meter wave length. 1t Is knows
as the "refenerative get" and is b,
waves. from 200 to 800 meters.
about IS.
Two variometers, SO.
Variable condenser, IS.
Grid condenser. fifty cents.
Phones, $6.
six.yolt storage battery to light thu
Dry cells for '"B" battery, $3.50.
Bulb socket, 81.
Bulb, IS.
Rheostat. $3.50.
There's $5S right there. But, re.
member that when you have II and Il
10 hooked up and you get that first
thrilling, .inspiring sound Of hu
man voice coming from four or Rv,
hundred miles away, your $6S will seer
like mighty small price to pay FOL
one of the most wonderful sensa tom
that modern science has given US.
Each Sunday night, with a set hk,
this. I have listened to the actual serv
ices In q church $40 miles away. will
! four or five phones connected In th,
| circuit.