INDEX Page. 19 of 92
4.4 Tunable Antenna Control
The use of tunable antennas (SteppIR, Ultrabeam) is becoming popular.
These antennas vary the physical dimensions of the elements according to the operating
frequency in order to ensure a perfect resonance.
The Expert 1.5K-FA, through the dedicated "PORT" socket linked to the antenna
controller, allows automatic control by tracking the tuning knob changes.
This dedicated link makes the following advantages possible:
- Simplification of wiring, such as the complication of adding additional wiring to the CAT
connector is no longer necessary.
- Compatibility with all types of CAT: The Expert 1.5K-FA converts the CAT protocol,
so two different transceivers (CATs) can be used simultaneously with the same
controller without any modification of the wiring.
- Thanks to the frequency counter inside the linear, the antenna can be controlled also
without the use of CAT (CAT NONE).
All of the automatic features of the linear are ensured even in the most complex
configurations.
Antennas of all kinds can be connected to the "ANT" PORTS and the Expert 1.5K-FA will
choose the antennas according to the set-up and will manage them according to their
characteristics.
The CAT is recommended, however, if the transceiver does not have the CAT or if it only
has the "Band Data", the Expert 1.5K-FA will continue to drive the antenna with the
frequency measured by the counter (data collected after the first transmission) .
The simplest possible configuration is a single tunable antenna according to the following
diagram
The link is configurable for any position (ANT 1,2,3,4) you want use.
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