TM 11-5820-890-10-3
UNUSUAL WEATHER
OPERATION IN BAD WEATHER. If you are operating your radio in unusual weather, do the PMCS more often. Keep
your radio controls as clean as you can (especially the keyboard and display). Keep your radio shaded from the sun as
much as possible when operating in a hot climate.
Your radio should operate under any of the following conditions:
•
Moist heat (tropics)
•
Ocean spray
•
Sand or dust storms
•
Dry heat (deserts)
•
Salty air
•
Mud
OPERATION IN LOW TEMPERATURES. Keep ice off of your equipment. Cables may become brittle if they are exposed
to cold weather. Do not bend them at sharp angles. Make sure the vehicular charging system is strong enough for you to
communicate. Batteries lose their power when they get cold. If you have a dismount radio, check the battery life
condition more often. Log battery life condition each time you assemble or disassemble manpack.
NOTE
If you have SC or FH data in the RT, do not set FCTN to OFF1 if the temperature drops
below +20 F. You may cause the data to be cleared by shutting off RT power.
FORDING
Your radio has been tested and it is water tight. You do not have to make special preparations for water crossing. After
fording, remove any mud or other foreign matter as soon as you can.
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