Grants Pass daily courier., July 21, 1923, Page 6, Image 6

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GRANTS PASS DAILY COITUTR
PAGE RIX
SIMPLE ANTENNA IS
BEST FOR AMATEUR
Straight, Single Wire Type,
Placed High. Is Preferable
for the Receiving Set.
It Is estimated tliut In one year's
time from Wu.tMKt to l.uuo.ixio, new
radio receivers were installed in the
United States and from observation
It would appear that there were al­
most us many different styles of an­
tennae erected us there were sets
installed. This, too, despite the fact
tlftit the country was flooded with liter­
ature telling each and every cltlxen
how to build Ills own set.
These cage, tlat-top. multl-wire. um­
brella. etc., kinds of antenna were de­
signed primarily for their sending
characteristics. Remember tliut, In the
beginning of radio, the man who want­
ed to hear wireless signals had to
know quite a lilt about practical radio,
lie had to know the Continental und
Morse «sales, and ki addition to lie a
fairly decent sort of mechanic. He
was. lu short, the ra«V<> amateur, who
wauled to semi us well as receive.
Therefore nil this early literature was
for the limn who wunted to send us
well as receive.
Since radiophone broadeasting waa
first started, there has grown up an­
other army of radio enthusiasts,
greatly outnumbering the pioneer ama­
teurs, who do not want to send at all.
but who do wish to receive. Then*fore
much of tills early literature does not
apply, or more correctly, all of It does
not apply, to the new generation.
In building an antenna, remember
that nothing Is more satisfactory for
of fine mesh chicken wire In a molat _________________________ _ __________ _______________
s|M>t and ctmneel the ground lead to
this, or drl'e a ail-foot length of gul-
Minlie<| pl|>e er copper rod Into the
graund.
All outdoor receiving or transmit­
ting unlennu should be protected by
some form of lightning arrester or
switch, approved by the National Board
of lire Underwriters. Till» switch
must have at least a capacity of ItU
amperes, tksi volts, and must be sup­
ported at leust five li lien from the
side of the building. The ground con­
nection from the switch consists of No.
10 li. A S. gauge copper wire, also sup­
ported tile iueliea from the building.
If the antenna Is to be used for re­
ceiving only, any one of the numerous
approved lightning arresters now on
the market will lie satisfactory. How­
Bl I Till VI M
ever, these cannot be used for a trans­
mitting station, al the current put lulo
the untenna by the transmitter la In
effect a mlnluture lightning discharge
and would eacupe to the ground
through the arrester.
tine of the most satisfactory an­
tenna for short wave reception con­
sists of a single wire, 100 to l.Vi feet
long. aup|H>rted at least 40 feet above
the ground, with tlie lead In taken
from one end. Thia wire should be
pluced so that it Is fqre from all ob­
structions. such us trees and houses.
If power or high tension tr.insmls-
slon lines ure in the Immediate neigh­
borhood of the antenna, it should be
placed as nearly at right angles to
the power lines ns possible, In order
JULY aa. io»«
to reduce the UOs-ycle Induction.
No. 12 or No. 14 hurd drawn copper
wire, or copper clad or copper weltl
HOI'P
of the same gauge muke a very satis­
Cream Tomato
factory antenna. Furthermore, this
wire Is strong enough to support It­
III Tall With Harlc>
self. und will stand up In weather of
FINII
all kinds. Phosphor bronxe wire or
Urlisi Salmon Steak IOc
standard Copper cubic Ims u higher
tensile strength than u single wire,
ENTREES
and therefore long spun* may lie xufe-
Young Friend Chicken and Co unir) Gravy <IOc
ly made, but the receptlonal qualities
Saule Young Veal with New Peas :4At
of these wires are not noticeably su­
perior to the wires first mentioned.
Beef Stew with Vegetables HAc
If a single wire antenna were ro-
Boiled Shoulder of luiiub and lloullllou Vegetable«* ff.V
Itoiletl <K Tongue and Pliklisl Sauce
t olti llollrd limn with Point,» Salmi :l.V
Shinçies » Roof in? Paper
AH kinds of b idding material
»
The Valley Lumber Company
West F Street*
Phone 47
THE ACME CAFE
SUNDAY DINNER
ROASTS
Prime RII» of Beef lu Jus io<
Is'g of Pork ami tpple Sauce tile
VEGETABLES
New Mutilisi Potatoes
Green Henns en rue
IHSSERT
Green Apple, Cream, Blackberry uml Pumpkin Pie
Berries In Neaaoii
Its- < retini
Tea, Goiter. Milk* Ice Ten
NEW ERA IN AVIATION
IS BRITISH FORECAST
The Home Merchants Want Your Business
Read the Advertisements
Phone 123
■
Corner Third and G Streets
Grants Pass, Oregon
County
Flour Mill
Retail Price List
Effective July 23, 1923
»
FLOUR AND CEREALS
Josephine’s Best, (hard wheat
flour) 49-lb. sack...................... $2.00
Clematis Flour, 49-lb. sack......... 1.75
Graham, 24-lb. sack
90c
Whole wheat Flour, 10-lb sack
45c
Graham, 10-lb. sack...................
45c
Wheat Hearts, 9.1b. sack...........
50c
Corn Meal, 10 lb, sack ................
40c
Rye Meal, 10-lb. sack................... 50c
Cream Oatflakes, 9-lb. sack...... 60c
Pastry Flour, 40-lb. sack............. 1.40
Health Bran 6-lb. sack ...
25c
GRAIN
Wheat, per 100-lbs
$2.25
Shelled Corn, per lou-lbs.
2.45
Cracked or Ground Corn, 100-lbs 2.60
Rolled Barley, 67-pound sack..... 1.40
Ground Barley, per 100 lbs.......... 2.10
Whole Oats, per 100 lbs..............
2.40
Rolled Oats, 6<> poundsack.........
1.50
Ground Oatc:, 100-lb .sack ...... .
2.50
Ground Wh at per BX) lbs..........
2.40
Rye per 1 o pounds .................... 2.25
2.50
Ground Rye, per 1< >0 lbs............
MILL FEED
Mill-run, 80-lb. sack......................
Shorts, 80-lb. sack.......................
Bran, 50-lb sack..............................
Milkflow, 100-lb.sack....................
Josephine Dairy Feed, 90 lb sack
Molasses Dairy Feed, 8o-lb. sack
Chop Feed, 80-lb. sack...............
Stock Feed, 75 lb. sack ..............
POULTRY FEED
Chick Feed, 100-lb. sack . . .
Chick Mash, 100-lb. sack.............
Developing Scratch, 100-lb. sack
Scratch Food, 100-lb. sack..........
Josephine Egg Mash, l<X)-lb. sack
Dried Buttermilk, per lb............
Chicken Oatflakes, 80-lb. sack
Beef Meal, 100-lb sack ..............
Granulated Bone, 100-lb. sack
Eastern Oyster Shell. 1<M)-Ib. sack
Granite Grit, 100-lb. sack..........
Charcoal, per lb..............................
Sunflower Seed, per lb.................
MISCELLANEOUS
Linseed Oil Meal, 100-lb.sack
$3.60 Alfalfa Meal, 100-lb. sack..........
Soya Bean Meal, 100-lb.sack
3.30 Cocoanut Meal, 100-lb. sack .....
Calf Meal, 25-lb. sack...........
1.35 Cottonseed Meal, 100-lb. sack
These prices are subject to change without notice
«
$1.70
2.00
1.10
2.75
2. .35
1.90
1.85
1.65
$3.60
3.90
3.30
2.80
3.00
11c
3.40
5.85
4.15
1.75
1.65
5c
10c
2.40
2.15
375
the amateur than the straight, single
wire antenna, as high In the ulr as It
call be placed anil about 150 feet long.
An antenna of this sort, will give bet­
ter results. In most cases, than any
other sort. It will take up less room,
and will not cut so heavily into the
owner's finances.
Tlie function of the antenna for a
receiving set Is to absorb the maxi­
mum umount of energy radiated from
a transmitter. Tills means thut It
must be so built and placed as to tie
as efficient as possible. The factors
governing the type of aerial to be
erected are as follows:
Amount of space available.
The amount of money which is to
bo spent.
The wave-length range which Is to
be received.
The distance from which signals are
sent.
An aerial possesses both distributed
capacity ami inductance, which com­
bined give It a defined period of oscil­
lation. These oscillations will set up
a wave motion the length of which Is
related to tlie capacity and Inductance
by a formula which can be closely a|e
proxlmated by multiplying the length
of tlie antenna In feet, pies tlie length
of the lead-in In feet, by 1.22. This
wll give the fundamental wave length
of the antenna.
No matter what kind of sntennn Is
used It must always be remembered
that the lead In should be as short and
as direct as possible. In other words
don't use up any unnecessary energy
received In the antenna to fores a
way through a long leetl-ln to the re­
ceiver.
if a multl-wire antenna Is used,
have the lead-in consist of as many
wires as are In the antenna. These
wires should be wrapped together at a
point a few feet from the antenna and
brought Into the receiving set as a
cable. Where this cable passes through
tlie walls of the building, It should be
Insulated with porcelain tube or stand­
ard electrose lead-in Insulators.
Be careful to keep the lead-in as
far as possible from electric light
wires, telephone wires, etc. If this Is
not done, an objectionable 60-cycle
hum may be heard In the phone%
caused by electric light Induction.
Tlie ground connection should also
be as short and direct as possible.
Service water pipes or gas pipes make
excellent grounds, and should be used
In all cases where available. All con­
nections In the ground lead-in should
be soldered, especially the connection
to tlie actual ground pipe. If this is
not done, the ground resistance will
so decrease the strength of the re­
ceived signals as to make them almost
inaudible.
If water pipes are not available for
a ground, bury from eight to ten feet
tail'd through u < umplete circle, It
would he noticed that a certain trans­
mitting itutlon would come In loudest
when the antenna waa hi a certain
definite position. That 1», n single
straight away untenna receives signals
better from one direction than from
others. This Is llluatrute<l In Figure
2, wldch shows the directional char­
acteristics of tills typv* of antenna.
"A" shows the lead-in und ''ft'' tlie di­
rection In which the untenna Is
| stretched.
If a transmitting station of con-
1 stunt power were moved »round the
receiver along the path of the curved
line "C." the algnals from this trans­
mitter would come In with equal In­
tensity ut all Jaxiltlons. Conversely,
stations from tlie direction "!>'' will
be received over greater distances than
those In aay other direction. Keep
In mind the direction of the transmit­
ting station from which It Is desired to
catch signals and )»>lnt the free end
of the untenna away from the station.
If the lead-in Is brought In from the
center of tlie antenna, Ila fundumen
tai wave length will bo decreased, und
Its directional characteristics will he
similar to that shown In Figure 3.
air. these chenply-run winged curs
are to lie made to alight so slowly
that the risk of u crash on landing.
| even under adverae circumstances,
will be practically eliminated. Fur­
thermore, such machines will be ao
handy on the ground, and their
wings will fold so neatly, that It will
lie iMissible to house tliftn In ordin­
ary motor garages.
It Is expected that the owner of
one of these ninchlnes will be able
to niako the trip from Ixmdon to
Paris ami back, sweeping high over
the t'hunnel und »neaping all the Ir­
ritations aiwf delays of each trans­
port. for bout $5. A movement Is
now on foot to get motor-garage pro­
prietors to set aside smooth-surface I
fields, marked clearly so they cun be
aeon from above. In this way Uu*
drivers of little "air cars," when on
week-emt aerial ramble«, wilt have
points all over the country where
they can descend anil replenish I heir <
gasoline tanks, or make any neces­
sary repairs or adjustments.
London, July 21 (A. PI A new
era In air flying, that of cheap, safe,
popular iilrjtliinlng. is foreshadowed
by the remarkable success attaint'd
by tiny British alrplunea lulled mo­
tor gilders. One of these, u small
monoplane fitted with a three horse­
power engine, recently reached u
speed of 53 miles uu hour during
tests near London. It climbed to
. 2,350 feet, and although In (lie ulr
for an hour anil twenty minutes, con­
sumed less than a gallon of petrol.
French aviation experts also art*
perfecting similar "pocket-pianos,"
intended for use by amateur aviators
and sporting enthusiast«. At u con­
test soon to lie held near Paris thir­
ty of these diminutive planes will
Camant for China.
Mix n cupful of milk with n cupful
take part. In England a small "car
with wings," capable of currying its of vinegar, «epurnte the curd from the.
owner through the ulr at the speed whey ami mix the whey with tlMj)
of an express train with no more whites of five eggs, beating the wholn /
power than is required by* a motor­ I'tgether thoroughly. When well mixed,
sift In u lit lie quicklime uml atlr until
cycle,
has reached such a practical It Is of the ..... slstency of thick puste.
------------------------------------------------ #
stage thut orders are being booked Mlth this, broken china, glims and
for It by the public.
RADIO FLASHES*
cracks of all kinds may be mended. It
Rising out of small fields and be­ dries quickly uml resists the uctlon of
ing wonderfully controllable In tin* «'liter uml heat.
New Yofk Is to have a perma­
nent radio fair.
A reformed burglar Is broad­
casting a talk on bow to beut
crime and criminals.
Kir Oliver Lodge hopes to
cure protracted droughts In
England by using radio to elec­
trify the atmosphere.
A camper at Cayuga Lake, N.
Y„ with a makeshift aerial, waa
astonished to hear a concert
¿RADE
broadcast at Louisville, Ky.
At n meeting of the Rota­
on n pnir of overalls
rians at Ithaca, N. Y., the pro­
is our guarantee of
ceedings were conducted by the
uatisfactory
wear
absent president by means of
and our bond thut
radio.
you get
If It Is possible, Incorporate
A New Pair FREE If They Rip
In your detector circuit an eight
or ten-volt meter for obtaining
Made
of
ipecial
woven 9-ounce denim, Indigo dyed, cut full nnd roomy,
constant voltage operation of
where the room is needed, fitted at the waist like tailor-made punts, requir­
your detector tubes. The life of
ing neither suspender« nor licit to keep them up.
your tubes will be Increased
Belt loops simply added for convenience. Plenty of big, roomy pockets.
about three times by careful op­
Sewed throughout with special thread. Buttons riveted on, to stay on.
Finished with care, turn them inside out and inspect them.
eration under tills plan.
A system of wireless tele­
phony now connects the Turks
Islands and the Caicos Islands
In the West Indies, the same In­
stallations being used also for
wireless teltjraph and for com­
have the reputation of being the strongest, best fitting and longest wearing
munication with ships. The ilia
overalls on the market. Your dealer knows that our guarantee tneuna ex­
tance covered by the radio-tele­
actly what it says.
phone circuit Is about twelve
miles.
Levi Strauss & Co., San Francisco
s rand
^wo-Horse Brand
Copper-Riveted Waist Overalls
#---------------------- _- ----------_----------- 4
Reliable Merchandise «Ince I KM
Maker» of Kovcralla, Keep Kid» Klean
J