Cam Sat CAM-9 Operating manual - Recommendations
5
Recommendations
1 . Larger systems consisting of a few kits should be started up and set up
one after another, i .e . the power supply should be connected to the next
kit only after the previous kit has been set up precisely .
2 . It is recommended to install CAM-9 receivers at least 7 m away from
digital receivers (CDS-5021, CDS-5IP and other) .
3 . It is not permitted to power devices without antenna cables screwed
into the SMA connectors .
In order to ensure a stable radio range, the antennas have to see
each other optically . One hundred percent optical visibility should be
provided in the first Fresnel zone.
d -
7,2 m
D - 1 km
At the frequency of 5 .8 GHz and the distance of 1 km, free space with the
diameter of at least 7 .2 m should be provided for the radio beam .
A few ready-made calculations for CAM-9 are presented below
Distance [km] 0 .4
0 .8
1
1 .2
1 .6
2
2 .5
3
Diameter [m] 4 .5
6 .4
7 .2
7 .9
9 .1 10 .2 11 .4 12 .5
Larger directional antennas can be plugged into the connectors (Rx)
in order to extend the ranges .