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4. INSTALLATION
NOTE
Read this chapter carefully prior starting with installation. Before unpacking inspect shipping
carton first, if it is not damaged. Keep all of packing parts for possible future shipment. Check
unpacked power amplifier. If you find some damaging, contact your dealer immediately to
keep full warranty.
During installation go step by step according to next parts.
4.1. Grounding
CAUTION
The amplifier has to be grounded properly! Connect the screw on the rear panel of the
amplifier to your local grounding system with a copper cable; use a cross-section of 4
mm
2
at least
.
Connect your transceiver to the same grounding system of your shack carefully!
Use minimum length of cables and make sure that the connections are both physically and
electrically sound. With poor grounding, you may risk damaging to your equipment, having
problems with TVI/BCI or your transmitted signal may be distorted.
4.2. Coaxial Cable
The output of the transceiver is to be connected to the input of the amplifier via RG58 or
similar cable. For the connection between the power amplifier and the antenna, Belden 9913
or similar coaxial cable
suited for high power
is recommended. Both the INPUT and
OUTPUT N sockets with Teflon insulation are used.
4.3. Control Cable
Control cable maintains TX / RX switching of the PA (TX GND). The cable is shielded. On
the side of the power amplifier a CINCH-socket is used. On the side of your transceiver you
have to use a socket suitable for this transceiver. During transmitting the middle pin is
connected to the ground.
Amplifier uses one double coaxial relay for input and output (input and output are switched at
the same time). It has to be switched earlier than HF is applied (cold switching).
Modern transceivers have a time delay between PTT switching and power output.