TM 1-1680-359-10
2-10. ARCTIC REGIONS (Cont)
operation of the radio. The following table shows the maximum operating time for cold weather use of the
batteries.
Temperature (°F)
Operating Time
+32
30 minutes
0
15 minutes
-40
5 minutes
2-11. OPERATION IN MARITIME OR RAINY AREAS. Keep SARVIP and associated components in a dry area if
possible.
2-12. RECOGNITION AND IDENTIFICATION OF JAMMING.
a.
Under tactical conditions, the AN/PRC-90 or AN/ PRC-112 carried by the crewmember may be jammed by
the enemy. The jamming may be planned or accidental and will usually be caused by a strong signal
transmitted on the same frequency as that being used. The signal being transmitted may be a steady carrier
or a modulated carrier.
b.
When it becomes difficult or impossible to receive the desired signal, switch the function switch to the
alternate voice channel or revert from the voice to the MCW mode and attempt CW contact.
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