Figure 4: Rf Head Block Diagram - Nuomm NEWSCASTER VT2 User Manual

NewsCaster VT2
RF Head Features:
The rugged NewsCaster VT2 RF Head, as
shown in Figure 4, includes:
• IF to RF Up-Converter.
• RF Power Amplifier.
• Low Noise Frequency Synthesizer.
• Diplexer that splits the +48 volts, the
70 MHz and the Control Data.
• DC to DC Converter.
• Optional Pan & Tilt Controller.
• Optional Omni/Directional Antenna
switch.
• Optional Four Form C Relay contacts
controlled from the Control Unit.
The RF Head components are housed in a
weatherproof enclosure that mounts on the
antenna pan and tilt housing, replacing the
conventional power amplifier. This setup
combines precise tuning of the transmitter
frequency with exceptional output power. The
Newscaster VT2 RF Head
Input from
Control Unit
Diplexer
48 V Control Data
DC to DC
Power Supply
Pan & Tilt
To Pan & Tilt
Controller
(Optional)
M17-0002-01A Rev 0.0
901-I058-02
70 MHz
IF to RF
Up-Converter
Microprocessor

Figure 4: RF Head Block Diagram

17
RF unit is equipped with type "N" connectors
for the directional and optional omni-
directional antenna(s).
Other Standard Features:
• Digitally synthesized microwave oscillator
tuning.
• RS232/RS485 Remote.
• RF Power Output Adjustments.
• Field Programmable RF and ASC settings.
Other Options:
• Remote Control Software allowing the
NewsCaster VT2 to be fully monitored and
controlled from an IBM Compatible PC
through a RS232C/RS485 port.
• Mounting Adapter Plates enabling
mounting of the RF Head to the Pan and
Tilt.
Amplifier
Module
Detector Module
ALC
Four Form C
Relays
(Optional)
Features
RF Output
To Directional
LPF
Antenna
To Omni
(Optional)
Antenna
4 Relay
Closures
User Manual