User’s manual
EXPERT 1K-FA
Pag. 11 of 76
2. GENERAL INFORMATION
(Read the specific chapters for more details).
2.1 Power supply
The amplifier’s power supply is 230, 215, 200, 115, 100 Vac (230 Vac default).
The main switch [I/O] is located on the rear panel, in the [O] position all the internal
circuitry is powered off, in the [I] position (red led ON) it is possibile turn ON or turn OFF
the linear amplifier in one of the following ways:
a)
Using the [ON]/[ OFF] keys on the front panel.
b)
Applying / removing 9 -15 Vdc on pin (8) of the CAT connector.
c)
Using the RS232 port and the management software. It is possible to
download this software from the website
www.linear-amplifier.com
.
Note: when turned ON, almost all transceivers output 13,8 Vdc. With this voltage, the linear
amplifier can be turned automatically ON / OFF at the same time as the transceiver.
2.2 Input / Output
The linear amplifier has two inputs (INPUT 1, INPUT 2) to which it is possible to connect
two transceivers of any brand or type. These inputs are selected with the [INPUT] key.
It can manage up to four antennas (ANT 1, ANT 2, ANT 3, ANT 4).
The amplifier selects antennas automatically when they have been programmed.
The SO2R functionality is implemented using its proper connector.
2.3 ALC / RELAY / CAT
There are two transceiver inputs (IN 1, IN 2), to allow two different transceivers to be
connected at the same time.
ALC
Is a voltage (0, -11 Vcc) generated by the amplifier, it is used to control the
output power of the transceiver. In this way the power from the amplifier may
be automatically controlled. This link is recommended.
If the ALC port is not connected, it is ncessary to manually regulate the drive
power from the transceiver.
RELAY This essential link allows the amplifier to be put in the transmit state. To do
that it is necessary that the inner pin of the phono connector is connected to
signal ground. This is normally done at the transceiver with either a close on
ground relay, or with a switching transistor. It is important that the voltages at
that terminal do not exceed 12 Vdc. On the transceiver this link is often called
SEND or TX GND. Refer to your transceiver manual for more details.
CAT
Thanks to this link the linear amplifier will detect the operating frequency of
the transceiver and then automatically control changes of band, antenna and
automatic antenna tuner. Most modern tranceivers have CAT control. In old
models often, analog or digital information are sent for changing band. The
SPE Expert 1K-FA, thanks to an efficient frequency counter, constantly
