I
Friday, June 23rd. 1922,
Page Three
THE TILLAMOOK HEADLIGHT
meats, the tuner, the crystal detector
and the telephone condenser, can be
mounted on a stained base of wood,
say, eight Inches square and one-half
inch thick. This .vlll keep the com
ponent parts of the set together, mak
ing a compact unit of the whole and
also be advantageous in that it will
hold the instruments while adjust-
ments are being made.
The sketch shows how the Instru-
ments are connected with each other
and to the ground. The condenser Is
Telephone Condenser and Re connected to one side of the tuner and
to the crystal detector, The ground
ceivers Can Better Be Pur
is connected to the other side of the
phones and the condenser and the
chased—Mounting the Set.
tuner.
Lamp cord is excellent for connect
The materia1, needed to construct a Ing up small radio sets of this kind—
simple crystal detector Is as follows: It being a good conductor, well insu
Piece of silicon or galena molded lated and easy to handle.
tn a metal button, 25 cents.
HOW TO LISTEN IN
Two binding posts, 20 cents.
There are two variables in our radio
A block of shellacked or stained
receiver that > require adjustment
wood 3 by 3 % inches.
when It Is desired to listen-lu; first,
A thin strip of sheet! copper or the detector, and second, the slide po
brass % inches wide by two Inches sition on the tuner. Once the slider
long.
position has been determined for any
Mount the two binding posts on the given transmitting station, it Is only
block of wood as shown, fastening un necessary to adjust the detector to
der one binding post a strip of copper pick up that same station again.
or brass—see sketch—and under the
To operate the receiver for the first
other binding post a colled up spring time it Is best to wait until some
of fine springy copper or brass wire. station like KDKA Is transmitting be
By placing, the button of metal con- tween 8:30 and 9:30 p. m. Then ad-
CRYSTAL DETECTOR
EASY TO CONSTRUCT
$1000
$1000
One Thousand Dollars
IN CASH PRIZES
Tiiiamook
JULY 4th
The Crystal Detector.
PI
tun »
G2
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L
DCICC1OR
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1.
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fresh nwrts
Set Mounted on Base, With Connections Shown.
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I tainlng the crystal of silicon or gale
na on the strip of metal and allowing
the spring to make contact with the
surface of the crystal the detector is
complete and ready for operation.
A complete crystal detector can be
purchased from 75 cents to $2, de
pending upon the type.
Two other pieces of apparatus are
necessary that cannot be readily con
structed—they are the telephone con
denser and the receivers. A tele
phone condenser, to be used in shunt-
ing acrosj the "phones can be pur
chased for about 50 cents.
For us? with a radio receiver of
this type it is recommended that n
pair of 3,000-oiini, Murdoch type, No.
56 receivers, costing $6. be purchased.
These are all the necessary parts
needed for the complete receiver.
If It is desired, the three Instru-
Just the detector by changing the
point at which the spring and crys
tal of the detectpr make contact until,
when a nearby electric light Is snnpped
on and off, a click Is heard in
the head phones. The detector Is now
adjusted on a sensitive spot on the
crystal. By changing the slider po-
sltlon, the transmitting station should
be picked up.
After a station Is once picked up
it is an easy matter to adjust the de-
Rector and slider position until maxi
mum response Is obtained In the tel
ephone receiver. With a simple set
of the kind described in tills and pre
ceding articles anti a little practice
one soon becomes adept at picking up
a given station. The entertainment
derived from llsteniug-lil is usually
well worth the time spent and the
money invested.
HUNDREDS OF DOLLARS IN AWARDS FOR THE BIG PARADE
CASH PRIZES FOR THE LOG ROLLING, TIMBER BUCKING, SHIN-
GLE PACKING CONTESTS AND STUNTS
PRIZES FOR SCORES OF RACES, CONTESTS, GAMES, ETC., FOR
BOYS, GIRLS, MEN AND WOMEN—PROFESSIONAL and AMATEUR
BAND CONCERTS, PATRIOTIC PROGRAM, PICNIC DINNER, BALL
GAME, BOXING CARNIVAL (July 3) STREET DANCING, STREET
CONCESSIONS, CARNIVAL FUN, GRAND ILLUMINATED FIRE
EXHIBITION, HOSE RACES, GRAND BALL IN THE EVENING
VAGARIES OF VACUUM TUBES
Never Ate Such A
Delicious Steak!"
Our customers tell 'us the same
story over'and over again.
U. S. inspected stew beef.
Try us the day you are expecting
company. You’ll become one of our
boosters, also.
We give
quantity.
quailty
as
well
as
T
±j n
V" T i 1 l J
o
Free Delivery
Both Phones
Great Western Transportat’n Co
PORTLAND—TILLAMOOK
Two Trucks Daily
Special ratet* on household goods an d bulky commodities
Rate: 55c per hundred
John Mathers, Agt
Fired .22 <„..oer
make good switch points
• —
Ing c-rils and receiving trans
formers.
A single wire aerial 100 to
150 feet long is sufficient for
local and long distance reception
of broadcasting stations.
Do not String aerials across
the street or across electric
wires. Keep antenna wires off
electric light and telephone
poles.
St ended '>pper or solid cop
per wire should be used. Phos-
.¡mr i-r. uze wire if obtainable
s -ti«ng,-r hut not superior to
’upper.
ihh „| contact with a piece of
mineral like galena can be had
y wrapping it iu tinfoil, of
• utae. the top of the crystal
is left exposed.
The brass ends of large car
tridge shells make splendid
rystal detector cups.
They
should be cleaned out thoroughly
before they are used.
The winding of cardboard
tubes from oatmeal boxes may
be improved greatly if the rube
Is first heated In an oven for
about 15 m'nutes to take out
the moisture and then wound;
or l»etter still shellac if while
it is Mill warm and leave it
to soak in.
In winding tuning coils with
l-are wire a thread should be
tvund on with the wire. This
will separate each turn, When
the coll Is finished the thread
- an be taken off Shellac should
1« applied Immediately, When
the shellac is dry the copper
w|ra will hold its place.
Peculiar Actions That Always Astonish
and Sometimes Frighten the
Amateur Radioiet.
I:
Everybody who has had anything to
do with vacuum tubes has from time
to time had them do unexpected thing»
and give results that at the moment
seem beyond explanation.
The explanation of several charac
teristics wof these miniature giants
which are met with In daily operation
is sure to prove of great Interest to
tlie amateur. Incases where the ac
tions of the tube are not understood
these peculiarities have sometimes
frightened people.
One Instance of a newborn fun's
fright was brought to attention in a
letter of Inquiry. The instrument had
Just been set up and was being oper
ated for the first time. The tubes iiad
been firmly adjusted and were Just at
the »pilling point and—over they went,
giving vent to the most unearthly
sounds. The embryo enthusiast who
looked upon the audion tube as an
electric light, thought It was going to
explode. He Jumped away from the
Instrument and out of the room, and
did not venture near It for several
hours, ami then only after reaching
round the corner of the door with m
long stick and pulling the battery
switch off.
Similar Instances have come to at-
tention when bulbs generate varl-col-
ored vapors !n the vacuum chamber.
Absolutely the biggest event
in all of Tillamook’s History
Two nights and a whole day crammed with interesting and stirring events—
Not a dull minute—no waits
Get your parade entries in early—Enter for the various events of the day and
share in the thousand dollar prize awards. Vote for Goddess of Liberty now
- Invite your friends to spend July 3 and 4 at Tillamook.
FOR FURTHER INFORMATION APPLY TO C. H. COE, Chairman
Moonshiners Using Radio.
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Revenue officers seeking distillers of
the fer-fHmed and hardhitting "white
llghtnln'In the mountains of Ken
tuckv say that many raids ms de In
the last few months have proven un
successful due to the adoption of rt.
dlophoue as a means of comaiuniei
tlon among tbs moonaidners
$1000
$1000
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