VT22 Operating Instructions A9341 / August 2001
1
Series VT22
Video/Audio Transmitter
Operating Instructions
1.0
INTRODUCTION
Congratulations on the purchase of your new SEMCO Series VT22 Transmitter. The model and serial
number are located on the label affixed to the front of the unit.
WARNING
TO PREVENT DAMAGE TO THE UNIT, MAINTAIN THE WARRANTY, AND REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE THE COVER. REFER ALL SERVICING AND MODIFICATION
REQUIREMENTS TO QUALIFIED SEMCO PERSONNEL VIA THE CUSTOMER SERVICE HOTLINE,
1-800-995-0636, EXTENSION 188.
2.0
DESCRIPTION
The Series VT22 Video/Audio Transmitter is a true FM, modular, all solid state unit available either as a
fixed frequency or frequency agile microwave transmitter. The transmitter s small size and weight make
it ideal for covert body-worn applications. This transmitter operates between either 1710-1850 MHz or
2450-2483.5 MHz with a nominal power output of 0.25 watts. The video transmitter is designed to
transmit wide-band NTSC video signals (color or black & white). An audio sub-carrier between 5.5 MHz
and 7.8 MHz is provided for transmission of audio. These transmitters are FCC Part 90 Type-Accepted,
and are designed to be used in conjunction with a wide variety of antennas, including dual patch antenna
system. Line of sight range is approximately 0.50 to 0.75 miles. Figure 1 depicts the VT22 Transmitter.
Figure 1
Series VT22 Video/Audio Transmitter
3.0
SYSTEM OPERATION
