Evening star. [volume] (Washington, D.C.) 1854-1972, 1929-10-12
MEXICO DEMANDING
MORE SHORT WAVES
Seeks to Reopen Conference
in Which North American
Nations Split Channels.
BY MARTIN CoDEL.

Mexico now enters vigorously into the
short-wave picture. 1t has made diplo-
matte representations looking to q re-
opening of the conversation which led
to an agreement among other North
American nations for a division Of the
radio channels in the so-called contt-
mental band of wave lengths.
Conscious of the possibilities for in
ternational communications in short
waves, Mexico is fatty demanding more
channels than the eight for It's exclu-
sive use and the 16 for shared use re-
served at the Ottawa parleys last Feb
ruary.
Mexico did not attend the confer
ence, and the short-wave allotments
went into effect for the United States,
Canada, Newfoundland and Cuba last
| March IL.
The note expressing Mexico's dissen-
sion was first sent to Ottawa and thence
to the American State Department. The
attitude of the United States Govern
lment toward Mexico's complaint will be
made known after the subject has been
discussed among the various Federal
agencies involved, particularly the Fed
eraI Radio Commission and the radio
division Of the Department Of Com
merce.
Leave Ottawa Satisfied.
The participating representatives left
Ottawa quite satisfied with the alloca-
ton of the 228 short-wave telegraph
channels available for division among
the several countries.
The United States was allotted 112
exclusive channels and 81 to be shared
with other countries. Canada and New
| foundland together got 38 exclusive and
! AZ shared channels. Cuba'S allotment
was exclusive channels and the shared
use of Is. Advances in radio technique
now make it possible to tune sharply"
and thus double the use of each Of these
| channels.
1t was presumed that the remaining
| frequencies would be taken by Mexico,
| the other Latin America countries of
this continent having shown no interest
| in the conference. Nothing was heard
| from Mexico regarding the negotia-
tions, and the agreeing countries pro-
ceeded to allocate specific frequencies to
| their respective domestic services.
In this country the agreement opened
| the way for continuing plans for the
proposed Nationwide network of radio
| telegraph stations now in process of
construction by the Universal Wireless
Communications Co. All the short
waves in the continental band are re-
garded as mountaineering in their eff
| feet; that is, they do not conflict with
the use of the same frequencies in South
America and on other continents.
Moreover, it was possible to duplicate
the use Of many of the channels In
Newfoundland and the Southwestern
part Of the United States or in North
ern Canada and Southern United States
without causing interference.
Has Disregarded Domestic Radio.
Mexico has been devoting attention to
the establishment of international radio
communications, but apparently has
been disregarding the domestic posi-
bilities of radio until now. Only last
August Mexico established a radio Serv-
It's powerful short-wave station at Cha
ice with Europe by way of Germany.
pultepec has also communicated with
England, Italy, Argentina and Japan.
Other wave lengths than those in the
continental band are used for such
communication, however, all the CONT
mental frequencies being for interior
point-to-point services.
Practically all OF the channels allotted
to the United States have been assigned
to various American companies for q
wide variety of uses, the most spectacu-
lar Of which is their proposed use In
radio-telegraph networks designed to
compete with the wire telegraph sys-
TENS. Not all of the American assign
ments have been decided upon, however.
Only yesterday the Federal Radio Com
mission reserved two more continental
frequencies for the various police serv-
ices, making three available for police
dispatching of patrol cars equipped with
short-wave receivers.
The commission also adopted the rec
ommendation Of its engineers that six
channels be reserved for temporary mo-
bile use and for local relay broadcast
ing; that is, for such occasional services
IS broadcaSts from yachts, airplanes and
the like.
Five were also reserved for special mo-
bile uses, such as train signaling, but
these will not be assigned pending hear
ings on the necessity Of using radio for
such uses.
(Copyright, 1929, by North American News
paper Alliance.)