Itowa ITW 4 LEVEL, Руководство пользователя

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ITW LEVEL
USER MANUAL
9
3. ANTENNAS
It is recommended to install the antenna in a place with good visibility and free of obstacles
that can obstruct the correct emission/reception of the signal. If necessary some masts or
turrets has to be installed.
The transmitter and receiver antennas has to be faced each other
According with the data given by the customer, it is chosen the most appropriated antenna to
cover the indicated distances of link and the orographic characteristics of the zone.
The main characteristics of the antennas supplied with the system are the following:
DIRECTIONAL ANTENNAS
MODEL GAIN (dB.) Nº ELEMENTS
YTD-3 (406-412MHz) 5 3
YTD-5 (406-412MHz) 8 5
YTD-10 (406-412MHz) 12 10
YTD-3 (869MHz) 5 3
YTD-5 (869MHz) 8 5
YTD-12 (869MHz) 14 12
Table 3.1.
OMNIDIRECTIONAL ANTENNAS
MODEL GAIN (dB.)
TMB/N3 (406-412MHz) 3
TMB/N6 (406-412MHz) 6
ROD YTM 5/8 (Only for receiving) 0
TMB/N6 (869MHz) 6
Table 3.2.