User's Manual

Broadcast Microwave Services, Inc. – 12367 Crosthwaite Circle – Poway, CA 92064 7
Phone: [phone] - Fax: [phone]
Email: [e-mail] Web: www.bms-inc.com
OVERVIEW
4 GHz Carry-Coder II is a mobile transmitter which is used in the 4.95 – 4.99 GHz frequency range. This spectrum has been
assigned to the Public Safety application according to the Subparts 90.1201, 90.1203, and 90.1207 of the FCC regulations.
BMS offers its expertise in the 4GHz Carry-Coder product family with the high-power Carry-Coder II transmitter and companion
COFDM integrated receiver-decoder, the De-Coder II.
The 4GHz Carry-Coder product family includes:
• CARRY-CODER II: Transmitter with 1W external power amplifier.
• DE-CODER II: Rack-mounted COFDM integrated receiver-decoder.
• CARRY DE-CODER II: Mobile COFDM integrated receiver-decoder.
A simple diagram of the 4GHz Carry-Coder II system is shown in Figure 2.
4 GHz Receiver
Microphone
Video Camera
4 GHz Power Amp
RF Out
RF Out
1W Max.
Optional Battery
4 GHz Carry-Coder II
4 GHz
Antenna
4.94 – 4.99 GHz
4 GHz Decoder II
or
4 GHz Carry-Decoder II
400 mW
Max.
Figure 2 Simple system diagram of the 4GHz Carry-Coder II with Power Amplifier
Key features for these products are:
• Robustness
• DVB-T transmission for mobile operation in a multi-path environment.
• High quality, reliable transmission of video and audio in mobile use.
• Flexible audio, video and data interfaces.
• Compact size.
• Low-power consumption.
• The CARRY-CODER II is a mobile device that performs wireless digital transmission of audio, video and data.
• The Carry-Coder II interface consists of video and audio cables.
The following block diagram gives an overview of 4 GHz CARRY-CODER II architecture: