le.
Radio Interference -
a.
167.5 personnel operating circuits will notify the TG 7.5 Communications Officer when serious interference of a continuing nature is
experienced on radio circuits.
b.
Responsible personnel mus? insure that radio sets are operating on
c.
Normal sources of radio interference are other transmitters, igni-
or very near assigned frequencies.
tion systems in motor vehicles,
power units, air compressors, re-
frigeration plants, .motor boats, aircraft, other spark generating
devices and atmospherics.
Shielding, bondings, suppressors, ‘and
capacitors must be properly installed on spark generating devices
if it is found that these spark generating devices are seriously affecting the efficiency of a radio system.
13.
Small Boats a.
14,
All small boats required to operate in remote sarees of Eniwetok and
Bikini Atolls will be provided with some means of emergency communications. Boats in this category which are not radio equipped will
be provided with Very Pistols or signal rockets.
Telephone Procedure a.
When a voice radio circuit is used as a part of the telephone sys-
tem, the operator will in each instance advise the calling party:
"Tris is a radio circuit--watch your security".
bd.
TG 7.5 will publish an Eniwetok Atoll telephone directory for dis-
tribution on Eniwetok Atoll and a Bikini Atoll telephone directory
for distribution on that Atoll.
Spare copies will be available at
each telephone exchange.
15.
Teletype Conference Facilities -
wares eres meven sad
err
ON-LINE teletype conference facilities will be available to this
Task Group for classified communications conference with Los Alemos and other points. ON-LINE conference must be limited to the
exchange of informaticn not containing RESTRICTED DATA. OFF-LINE
facilities are availabie for teletype conference discussing infor-
presewrven
mation containing RESTRICTED DATA. When time permits, a written
request for the use of these facilities should be submitted to the
Communications Officer, TG 7.5.
Such requests should be submitted
24 hours in advance of conference time, and are subject to epprov-
al by the Commander, Task Group 7.5.
16.
Personal Message Service -
a.
Expeditionary Force (EFM) messages which meet requirements will be
accepted for delivery by the TF Communication Center, located in
Building 221,
Parry.
These messages will be filed prepaid and
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