User's Manual

AT71-250 Transmitter Owner’s Manual
© Linear Industries, Inc. All Rights Reserved 34/38
MOD 4782 - Technical specifications:
Parameter
Specification
Input Impedance
50 Ohms
Frequency Range
470 to 806 MHz
Input Connector
SMA-F
Input Return Loss
>20dB
Gain
24dB to 30dB
Phase
70° to 120° at 570MHz
Output Power
Up to 50W (ATSC)
Output Impedance
50 Ohms
Output Return Loss
>20dB
Output Connector
SMA-F
Power Supply
+24V
MOD 4792: UHF divider 1:2
This module is a broadband passive design. No adjustment is required. Its divide equally the
incoming RF signal in 2.
MOD 4714: RF Amplifier, +50Vdc, main device MRF6VP3450H.
This module has the final stage of solid stage RF amplifier is set under the push-pull circuit topology.
At its RF output it is able to delivery up to 170Wrms ATSC. It is a single stage, and the main solid
state device is the transistor named MRF6VP3450H.
This module has a highly linear RF transfer characteristic. The module has 2 sets of assembled
components, the kit named CIM 3753 and the polarization circuitry kit named CIP 8592, and the CIM
3759 and CIP 8619 for also polarization and for temperature readings.
MOD 4714 Technical specifications:
Parameter
Specification
Input Impedance
50 Ohms
Frequency Range
470 to 806 MHz
Input Return Loss
2 to 4dB (push pull)
Gain
19dB to 20dB
Phase
29° at 570MHz
Output Power
Up to 170W (ATSC)
Output Impedance
50 Ohms
Power Supply
+50V