PEWS are also sensitive to animal movement, such as deer and dogs. With proper training and
experience MP can learn to tell the difference between people and animals.
PEWS provide an additional security aid for the unit defensive perimeter. The designator, AN/TRS-2,
will always be followed by the letter "V" and a number from one to six. The "V" is used to identify the
operating frequency of the system. For all the detectors and receivers to work, they must be on the
same frequency. The "V" number indicates the frequency to which particular system is set. You must
check to make sure that all elements match.
Each PEWS contain ten remote ground sensors. The sensors may operate either by wire or radio
signal. Each of the sensors may be connected to one of the two receiving sets. The signal indicates
movement in the area of up to 15 meters around the sensor. The signal will also indicate which sensor
is transmitting. The signal has a range of 1500 meters.
The system is lightweight (13 pounds), waterproof, battery operated, and easily concealed. The
receiver is operated on two 9 volt batteries. The detectors require one 9 volt battery. In normal use the
batteries will last three days in the receiver and about 15 days in the detectors.
The receiver accepts radio or wire transmissions from the sensors. Regardless of which mode is used,
the signal activates either an audible alarm or a visual display, or both, in the receiver. The receiver
has a self-test feature, a removable antenna, and two holding stakes.
The frequency variation on the PEWS you are issued is preset. The radio maintenance section must
check it to ensure that it is set for the proper area code. Each receiver has the capability of receiving
eight different area codes. There is a knob on the left of the display window which sets the area code
desired. Each of the ten detectors must be set to the same area code as the receiver. Each of the
detectors has an identification number (1-10). The ID number will be marked inside the battery
compartment. Each area code monitors ten detectors at a time. Each receiver can theoretically
monitor up to eighty detectors in the radio mode through the use of these area codes.
Once you have put the batteries in, you must test the detectors and receiver before emplacing them.
When you press the test button, you should see three 8's in the display window. This indicates the
battery is good and the device is functioning. If the battery is low, you will see either 88L or L. The
test/reset button also erases any alarm messages from the receiver memory and clears the display.
To test the detector, place the selector switch to the RF position. Then depress the test button. The
display window in the receiver will show a number and either C or P. The number is the identification of
the detector. The letter C indicates a vehicle and the letter P indicates, personnel.