AOR AR8200 Setup Instructions page 2

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AOR8200 RECEIVER SET-UP INSTRUCTIONS– continued

External Attenuator

The external attenuator adds a further 20dB of signal reduction to the receiver to enable better tracking

directionality when the receiver is in very close proximity to strong transmissions.

Figure 1: Antenna and Receiver

Figure 2: 20 dB External Attenuator

Tracking Hints

Note that the use of headphones or earphones reduces external noise and increases the chances of

hearing a weak signal.

When looking for a lost tag the maximum range is required. You will need to ensure that the exter-

nal attenuator is not fitted and the internal attenuator is turned off as per the instructions. Search in

a slow 360° sweep with the Yagi antenna horizontal to the ground. Twist your wrist 90° so that the

antenna is vertical, perpendicular to the ground and repeat the 360° search. The greatest range is

achieved if the receiving antenna polarization matches the polarization of the transmitting antenna.

Repeat sweeping continuously to determine the direction of the loudest signal—the direction of the

loudest signal is the direction of the tag. Be aware that a signal reflected off a physical structure like a

building or cliff can provide a false bearing.

Once a signal is heard and the tag is approached, the receiver/antenna will lose directionality as the

signal gets stronger. Turn on the internal attenuator to reduce the signal strength. When ~500 meters

from the tag the receiver will again loses directionality and at this point insert the in-line 20 db atten-

uator provided into the coax cable as per Figure 2.

When tags are extremely close and strong, unplugging the coaxial cable completely and walking

around with just the receiver will help pinpoint the tag.

The complete AR8200 manufacturer's operating manual can be found at:

http://www.aorusa.com/

support/manuals.html

For Help At Any Time: +1 (425) 881-3048 or Email: tags@wildlifecomputers.com

Any features and specifications are subject to change without notice.