DANIELS
ELECTRONICS LTD.
TM
VHF Enhanced Extra Wideband Receiver Instruction Manual IM10-VR3H040-AB
1-1
1
GENERAL
1.1
Introduction
The VR-3H040 Enhanced Extra Wideband Receiver family provides high performance
synthesized FM reception in 50 kHz channels in one of two frequency bands: 29 to 38 MHz or
38 to 50 MHz. A modular design allows each of the receiver's three internal modules; 21.4 MHz
FM IF/Audio Main Board, FE3H Enhanced Front End, and OS-3H Synthesizer to be
individually assembled and tested. This facilitates construction, tuning, and general receiver
maintenance. The internal synthesizer module may be programmed with up to 16 channels for
remote frequency control applications.
The VR-3H040 Receiver family combines state of the art performance in a compact modular
enclosure for applications ranging from remote mountain top repeaters to congested urban radio
environments. Each receiver module is characterized by dependable, low maintenance
performance under the most severe environmental conditions.
The VR-3H040 modular receiver family is compatible with all Daniel’s subrack and base station
enclosures.
1.2
VR-3H040 Extra Wideband Receiver Family Models
There are two distinct receiver models in the VR-3H040 Extra Wideband Receiver family
covering 29 to 38 MHz and 38 to 50 MHz bands respectively while operating in 12.5 kHz or
20/25 kHz occupied channel bandwidths. The two models are as follows:
• VR-3H035-SW- synthesized, 29-38 MHz band, Converted for 50 kHz Channel spacing
• VR-3H045-SW- synthesized, 38-50 MHz band, Converted for 50 kHz Channel spacing