Page 3 of 5
at longer time intervals. The beacon is capable to wake up if the model is moved or lift, acquire the
new position and resume its cyclic transmission.
OPERATE THE SYSTEM
How model tracking works
With the model flying, the beacon transmits a position update every 10 seconds, the radio signal
from the beacon to the receiver has no obstacles and the range is very long. If the signal is lost
when the model lands (due to uneven terrain, tall grass, obstacles etc.) the receiver will head
towards the latest position received from the beacon. Anyhow the beacon keeps transmitting its
position at longer intervals even after landing, therefore the receiver will get updated about the
landing position as the model is approached during the retrieval. The receiver permanently stores
the last known coordinates when it is switched OFF and restores them when switched ON, that
makes it possible to complete the retrieval at a later time.
the accuracy of the coordinates provided by the GPS system is affected by numerous factors
that introduce a position jitter. In the worst conditions, the accuracy is limited to 15-20 meters.
For this reason, the distance counter on the receiver flashes for distances under 25 meters, as a
warning that distance and direction may only be indicative.
Compass calibration
the internal e-compass calibration is recommended the very first time the system is used.
Refer to the instructions given further on in this document
Quick retrieval instructions
the system is designed for outdoor operations only. Operating indoors will lead to a quick
discharge of the batteries.
•Switch the receiver ON and apply power to the beacon
•The local position icon will blink (crossed) for some time until the receiver gets valid signals
from the GPS satellite network. Similarly, the model position icon will blink (crossed) until
the beacon gets valid GPS signals, or it will be steady if the receiver has already stored an
outdated coordinate from the same model referring to a previous retrieval session
•Model tracking is possible if the local position icon is stable and the displayed model
position icon is (updated) or (outdated)
•The arrow on the receiver LCD will head to the last known model position and the meter
counter will indicate its distance in a straight line. Walk to the direction indicated by the arrow
and check that the indicated distance decreases as the model is approached
it is recommended to have the receiver working and displaying the stable icon before
launching the model. A fully charged receiver battery guarantees that it works continuously during
all one day.
How to hold the receiver during tracking
•Hold the receiver vertical and lift the arm to improve the reception of the radio signal from the
beacon when it is extremely far
•Hold the receiver horizontal for model location
