TM 43-6625-916-12
RADAR TEST SET
OPERATION UNDER UNUSUAL CONDITIONS
EMERGENCY COMMERCIAL C-SIZE BATTERY INSTALLATION
If a battery stick is not available, six commercial C-size batteries may be used in its place as shown in Table
Battery Type
Min Temp
Recharge
Recommendation
Stick (NI-CAD)
-40 C
Yes
Recommended
NI-CAD C cells
-20 C
Yes
Acceptable
NiMH C cells
-20 C
Yes
Acceptable
Alkaline C cells
-20 C
No
Emergency Use
The supplied battery stick uses 3000 mA hour high capacity rapid charge NI-CAD batteries that have superior
cold temperature performance and are memory effect resistant.
NI-CAD and NiMH batteries common to local retail stores are usually standard capacity and temperature
range batteries that will provide less operating time than the supplied battery stick. It is preferable to utilize
premium performance batteries when available. Use batteries that are suitable for fast charging. Do not use
batteries that specify a minimum recharge time that is greater than 2 hours.
Alkaline batteries will provide satisfactory operation of the Test Set, with the exception that the low battery
indication may not provide acceptable warning of impending battery exhaustion. The use of alkaline batteries
should be limited to those applications where power for recharging is not available, or for emergency use
when a charged battery is not available.
Standard Carbon-Zinc batteries should never be used as they cannot supply the peak power needed during
some of the tests.
Install six commercial, C-size batteries as shown below in Figure 9-1.
a. Remove end cap. Remove discharged battery stick from Test Set, if installed.
NOTE
Test Set will not be damaged if the batteries are inserted so that polarity is
incorrect. Test Set will not operate until batteries are correctly installed.
b. Insert six commercial C-size batteries, making sure that positive terminal of each battery is inserted first
(toward Test Set eyepiece). Install end cap and tighten snugly.
c. Observe POWER-ON BIT TEST.
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