Perth Amboy evening news., 1923-07-21
TO THE NORTH POLE!

CHICAGO, (By NEA Service)-If
an Eskimo has a receiving set, radio
b~roadcasting station WJAZ boasts it
will reach him. u
WJAz is the call signal for the
two-months-old station at the Edge
water Beach Hotel here, equipped
to the last minute with everything
b radio hat should make 1t one of
ME most efficient broadcasting sta
tions in the country.
The boast of WJAZ springs from
the fact that it has established a
-broadcasting service to reach Dom
aid B. Macmillan, the famous ex-
pIorer, while on his arctic expedi-
ton. OF all b~roadcasters. the de-
signers and operators of WJAZ
claim. this is the most powerful ane
elaborate in the world, and because
of its equipment can easily flash the
news of the day to WNP, wireless
North Pole" the station on Mac
millan's ship, the Bowdoin.
Boosted Features
The completeness of the station,
opened only in May, led to It's being
selected as the home base for the
Macmillan expedition. 1t has three
distinctive features, according to M.
B. West. manager of the Chicago
Radio Laboratory, where the set
was designed and built. These are
the studio itself, where the pro-
grams are rendered; the structure
of the t%ransmitter and the arrange
ment of the antenna.
The studio Is a glass-inclosed.
sound-proof just off the hotel
dining room. 1t has elaborate drap-
cries and lavish furniture, and each
article is placed to aid the reflection
of sound and the elimination of
echoes.
The transmitter already has ac-
tualy used as high as 16 tubes. The
tubes are arranged in n circle to
provide absolutely equal distance of
connection with the rest of the
transmitter.
Singular Aerial
Contrary to the usual practice,
the station has a large, low resis-
lance aerial of the fan-shaped va
riety and with cage lead-in, not
working close to the fundamental
period. The natural period of the
antenna is about 230 meters, while
it woks at an assigned wave length
mQf 447 meters. The result is that
Is difficult to control the modula-
Ntionss but the transmission is much
more effective in so far as power
actually radiated is concerned, when
the modulations can be controlled,
The stations generator has a ca
pacity of 10 kilowatts at 1000 volts,
The set throughout is built oversize.
Every part is capable of carrying a
load of at least twice the expected
requirement, even for north pole
broadcasting. That insures free
dom from strain.
The arctic night is but a moment
removed from the music of the red
draped Chicago studio when WJAZ
gets to calling up WNP.
Water Used as Aerial
French naval engineers have been
experimenting with streams OF salt
water pumped from the sea into the
air as antenpae for the naval ships.
This is not yearly as effective as the
wire aerial, but it is designed for
emergency use when the wire aerial
breaks down.
Fourteen Miles Long
A radio wave II miles long can
be produced by the powerful sta
ton at Bordeaux, France. It is a
$4,000 meter wave. The messages
sent from Broadcast Central on
Long Island to Germany travel on
a 12-mile wavelength.
British Stations
1.-The six stations now broadcasting
concerts and other features in the
British Isles are to be increased to
eight 500 This may be about the
limit of -broadcasting stations In
that country.