Evening star., 1924-06-27
NEW EFFORT MADE
TO CALL M'M|L[AN
Short Wave Lengths Will Be
Used by Amateur Radio
Operators in Canada.
Special Dispatch to The Star.


HARTFORD, Conn, June 27.-Re-
peated failures of amateur operators
Of the American Radio Relay League
to communicate with the Macmillan
Arctic expedition at Etah, North
Greenland, recently have led to ar
rangements with the Canadian gov
ernment to install a special radio
equipment on the steamer Arctic for
purposes Of communicating with the
explorer.
The Arctic" sails from Quebec,
July l. in the service of the Canadian
marine department, for Baffin Bay
and the Canadian arctic islands, and
hopes eventually to work its way
through to Etah. The special radio
equipment consists of short wave
l. C. w. transmitter for operation on
about 120 meters. 1t is believed that
short wave signals will be more eff
fective in penetrating the severe stat
ic of the far north than the longer
wave lengths used in the past. The
Arctic Circle at this time of year
makes any radio communication diff
cult and results of the present ex-
pertinent will be watched with inter-
est.
The practicability of short wave
L d
discovered and made possible last No
venber, the two-way communication
established with European amateurs.
The Macmillan expedition sailed from
Wiscasset, Maine. last July, and TINS
new development has taken place
since the Bowdoin arrived at Etah.
"Arctic. Operator Chosen.
So far no communication has been
attempted on waves below lso me-
ters from the far north, which is the
wave sometimes used by the Mac
MILAN station. Broadcasts have been
sent out nightly asking Mix, the Mac
MILAN operator. to tune his trans
mitter and receiver down to 100 me-
tera. but the messages have appar-
entity failed to reach him
Bill Choat, Canadian ECO, or Toron-
to. has been chosen operator on the
q" Arctic" and has familiarized himself
with the new 120-meter radio set
He is interested in demonstrating
the effectiveness of the short wave IN
reaching the hitherto unworkaole
Bowdoin. If he does get in touch
with Mix he will pass on the short
wave suggestion and it is quite pos
sible that amateurs in Canada and
the United States may again near
WNP, the Macmillan station, on lo0
home.
Amateurs Given Privileges.
To make the experiment more ef-
fective, the radio branch of the Ca
madam marine department has re-
quested the cooperation of all North
American amateurs in the tests made
by the Arctic" The A. r. r. l.. al
ready has taken active steps toward
enlisting the greatest number of sta
tions to keep nightly watch for
is VDM The regular schedule will
be II pm. to midnight, eastern stand
ard time, daily, except Wednesdays.
On Saturday the station will be in
operation Unit midnight and con-
tinue until am. Sunday morning.
The radio branch of the Canadian
marine department also has given all
Canadian amateurs special authori-
cation to use wave length of 120
Arctic" and the A. r. r. l. is CO.
operating to keep the air free from
on this wave length
The shortwave transmitter will
comprise two admiralty T4A or two
Marconi MT6 tubes. supplied with
10000 volts 4so cycles to the plates
Of the tubes. The approximate rating
distinctive mellow note, no filter
will be used on the transmitter, and
the call VDM will be recognized
readily by all amateurs hearing the
signals. The expedition of the
Arctic is in charge of j. D. Craig and
the ships sailing master is Capt.
3ernier, a famous Canadian explorer.