Codan Radio Communications AMP-4-410 User Manual
3
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Remote control voltage, V:
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working range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 – 9.5;
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guaranteeing the nominal output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . > 7.0;
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guaranteeing the stand-by mode operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < 1.0;
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Enhancer:
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nominal passband gain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.7 dB;
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nominal bandwidth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .406.1-430 MHz;
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rated mean output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 W;
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input and output impedances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 ohms;
The Manufacturer's rated output power of this equipment is for single carrier operation. For situations when
multiple carrier signals are present, the rating would have to be reduced by 3.5 dB, especially where the output
signal is re-radiated and can cause interference to adjacent band users. This power reduction is to be by means
of input power or gain reduction and not by an attenuator at the output of the device.
multiple carrier signals are present, the rating would have to be reduced by 3.5 dB, especially where the output
signal is re-radiated and can cause interference to adjacent band users. This power reduction is to be by means
of input power or gain reduction and not by an attenuator at the output of the device.
3.
Construction.
Unit is realized as a module – see Fig. 2.
There are at the front panel:
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RF connectors;
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Fan, which pushes the air across an internal heatsink;
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Status LED;
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Access hole to the power set potentiometer;
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Handle for moving the unit into/from a subrack;
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Four quick release fasteners for fastening the unit in a subrack.
Front panel dimensions are 5.585”(W) x 5.055”(H). The full length of PA does not exceed 8.2”.
The PA contains two PCB assemblies: the Main Board Assembly and the DC Connector Board Assembly.
The Main Board is placed inside a shielded compartment and is to the main chassis plate/heat spreader. The
heatsink is attached to the outer side of Main Plate, as well as the fan controlling thermal switch.
The Main Board contains RF circuitries and the majority of DC circuits. The DC Connector Board includes the
LED, power controlling potentiometer, a fan voltage regulator and three DC connectors. The control,
monitoring and supply lines between the Main Board Assembly and the DC Connector Board Assembly are
routed through feedthrough filters, screwed into the Main Plate and are connected through an 8-wire cable and
two pairs of connectors (6-pin and 3-pin on the cable end, and 6-pin and 4-pin in the DC Connector Board).
This allows the same cable to handle the two modes of operation (remote or local, depending on which pins are
connected.
The PA contains two PCB assemblies: the Main Board Assembly and the DC Connector Board Assembly.
The Main Board is placed inside a shielded compartment and is to the main chassis plate/heat spreader. The
heatsink is attached to the outer side of Main Plate, as well as the fan controlling thermal switch.
The Main Board contains RF circuitries and the majority of DC circuits. The DC Connector Board includes the
LED, power controlling potentiometer, a fan voltage regulator and three DC connectors. The control,
monitoring and supply lines between the Main Board Assembly and the DC Connector Board Assembly are
routed through feedthrough filters, screwed into the Main Plate and are connected through an 8-wire cable and
two pairs of connectors (6-pin and 3-pin on the cable end, and 6-pin and 4-pin in the DC Connector Board).
This allows the same cable to handle the two modes of operation (remote or local, depending on which pins are
connected.