DANIELS
ELECTRONICS LTD.
TM
1-2
IM10-VR3H040-AB VHF Enhanced Extra Wideband Receiver Instruction Manual
1.3
Manual Organization
The organization of this document reflects the modular construction of the VR-3H040 family of
products. Each Section (e.g. Theory of Operation, Alignment, etc.) contains “subsections”
specific to each electronics module.
In general, this instruction manual includes the following information for the VR-3H040
Receiver and for each of its electronics modules:
1. A functional description and specifications summary.
2. A detailed technical description (Theory of Operation).
3. Assembly, setup and alignment procedures.
Along with a system overview of the entire receiver, information for the following electronic
modules is contained within this document:
21.4 MHz FM IF / Audio Main Board Instruction Manual: This manual provides complete
information on the operation of the 21.4 MHz FM IF / Audio Main Board. The bulk of the
material relating to receiver operation and installation can be found within this manual. The
majority of receiver options, including channel selection, are accessed through the FM IF /
Audio Main Board. In addition, most of the external receiver connections are made through the
FM IF / Audio Main Board.
FE3H Front End Instruction Manual: This manual provides information on alignment and
operation of the FE3H Front End Module. The Front End module provides filtered low level RF
signal amplification and down conversion to the IF frequency of 21.4 MHz.
Enhanced Synthesizer Instruction Manual: This manual provides information on alignment and
operation of the Enhanced Synthesizer Module. The synthesizer module provides the low noise
first local oscillator signal to the FE3H Front End module.
VR-3H 29 - 50 MHz Channel Designation Tables: This manual provides tabular frequency /
channel number assignment.
