Hama AV-1200 AIR Bedienungsanleitung Seite 45

Antenna Adjustment
Under normal conditions, it is not necessary to adjust the antennas and can still get great transfer quality.
However, it is necessary to adjust the antennas to maximize the performance if the transmitting distance is
longer and there are more obstructions in between the stations. It is recommended to adjust the 2.4 Ghz
transmit/receive antenna and UHF antennas according to the following instructions for the maximum
performance.
A. 2.4 GHz transmit/receive antenna
Transmission of video/audio signals for this product is via the specially designed 2.4 GHz antenna using the
2.4 GHz microwave channel. This antenna shows excellent penetrability against concrete and steel beam.
For environments that are frequent by moving objects, such as hall and lobby, this special design minimizes
the interference caused by multi-path and reflection. This antenna has the shape of a rounded fan. The
general rule for such antenna is to make the receiving and transmitting antenna face each other, as shown
below. This setup allows the strongest signal level during transmission. Due to many different environments
this product is being used in, please feel free to position the antennas to face each other accordingly. If the
distance between the antennas is less than 3 meters, adjusting the position of the antenna is not necessary.
a. Same height for both the receiver and transmitter.
2,4 GHz Antenne
Transmitter
b. Different height between receiver and transmitter
(Upstairs)
Transmitter
(facing across each other)
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2,4 GHz Antenne
Receiver
2,4 GHz Antenne
Receiver
(Downstairs)