Evening star. [volume] (Washington, D.C.) 1854-1972, 1929-09-01
SALTzNAN HEADS
|ODELEGAT|ON
American Group Completes
Plans for International Par
ley at The Hague.

A military delegation of three flanked
by a corps of technical experts, will
battle for the adoption of American
principles for the administration of in
ternational radio communications at
The Hague conference next month.
Ending several months of prepara-
ton, President Hoover has appointed
the American delegation for the con-
terence, provided for under the interna-
tional radiotelegraph convention of 1927,
TO consider technical advances in radio
and prepare recommendations for the
next international conference to be
held in Madrid in 1882. The American
recommendations held confidential al
ready have been drafted and sent to
the 70 foreign nations signatory to the
1927 treaty. and will form the basis for
the deliberations.
Maj. Gen. Charles NICK. Saltzman,
former chief signal officer of the Army,
and now member of the Federal
Radio Commission, is designated chair
man of the delegation. Other dele
gates are Maj Gen. George S. Gibbs,
chief signal officer of the Army and
Capt. S. c. Hooper, director of naval
communications. Appointment of Gen.
SaltZman came as surprise, since the
commission two months ago had desig-
mated Commissioner Harold A. Lafount
as its representative on the delegation.
Commissioner Lafount, however, pre-
ferred not to go since he is not a tech
nician, and the conference is entirely
technical.
Technical Advisers Named.
AS technical assistants to the dele
cation there has been named Lieut..
Comdr. T. A. M. Craven, Navy, con-
sidered one of the worlds most foremost
authorities on radio communications:
Gerald c. Cross, short-wave engineer
OF the radio commission; DR.. j. H. Dell
niger, chief of the radio laboratory of
the Bureau of Standards, and DR.. C. B.
Jolliffe, of the Bureau of Standards. A
dozen representatives of private enter
prises will attend the conference as OBJ
servers.
Although primarily preparatory
conference, with no powers of binding
character, much importance attaches to
The Hague conference. The salient
problem involving separation between
channels employed in international
communications. There are, under the
method of channeling, total of 624
separate bands in the high-frequency
spectrum, ranging from 5000 to $4,000
kilocycles, of which the United States
has approximately sc per cent.
Since the adoption at the 1927 con-
ference OF tWo-tenthS per cent as the
standard channel separation, it is
claimed that engineering advances have
been made 100 per cent reduction in
.aese spacings, thus making it possible
Practically to double the number of
CHANNELS in the band. The United
States is recommending that the con-
ference adopt one-tenth per cent
separation as standard.
Radio Progress Cited.
Thus, should the reduced spacing be
adopted, it will mean that the United
states will have only 33 per cent of the
available channels. Likewise channels
would oe aliocated only on the reduced
ssdSsss:s and there would be double the
number available to the world. Use of
more constant radio transmitting equip
ment, vastly reducing the amount of
Interference caused to neighboring
channels has made possible this import
ant engineering advance, it is claimed.
Suppression of interference through
the regulation of apparatus, study OF
various radio phenomena such as lad
ing, directional effects, skip distance
and static and other miscellaneous mat
tiers are on the agenda OF the confer
ence, but they pale into insignificance
in comparison to the channeling ques-
ton. Nations, if they so desire, may
adopt the recommendations OF the con-
ference although it is not necessary
for them to do so until final action is
taken by the international conference
mk Madrid