- Buyers Guide
Integrated Microwave Technologies LLC (IMT), a business unit within the Vitec Group’s Videocom Division, and a leader in advanced digital microwave systems for MAG (Military, Aerospace & Government) markets, is rolling out a range of compact and ultra-compact state-of-the-art digital transmitters designed to cater to its customers’ diverse needs and requirements.
IMT’s CTx, its newest ultra-small transmitter, is a low-power SD and COFDM video and audio concealment transmitter with standard-selectable modulation bandwidths of 6, 7 and 8 MHz. The CTx features H.264 SD MPEG-4 encoding and operates in the standard 2k DVB-T COFDM mode. It can be operated in 1.25- or 2.5-MHz narrow-bandwidth COFDM (NBCOFDM) modes, using the RF spectrum more efficiently, and therefore permitting more transmitters to be employed simultaneously, or allowing their useful range to be extended. Narrow bandwidth also delivers an extended usable range without requiring additional power output. This saves battery power and extends operational runtimes. With a power consumption of less than four watts with a 14-dBM output at both the 2.3- and 4.7-GHz bands, the CTx is easier to integrate into a concealment form factor. DC input power requirements are from 5 to 28 VDC.
IMT's ultra-compact VSTx COFDM transmitter is a low-power SD transmitter ideally suited for UAV/UGV, robotic, concealed body-worn video wires and other surveillance applications. It features superb H.264 SD encoding and operates in the standard 2k DVB-T COFDM mode. Only two cubic inches in size, and weighing just 26.3 grams, the VSTx is available with two connector options. The first model features a standard connector for simple interfacing in the field. The second includes a small flex-ribbon interface cable ideal for direct integration into OEM systems designs. The VSTx transmitter can be operated in 1.25- or 2.5-MHz narrow-bandwidth COFDM (NBCOFDM) modes, with an RF output of up to 100 mW. The VSTx can easily be used in fielded small robotic applications, as well as body-worn operations.
The STx COFDM transmitter delivers HD/SD output at 250 mW in the 2k DVB-T COFDM mode. Occupying less than five cubic inches, it is ideal for any covert or body-worn operation. It supports video/audio/data transmission with selectable modulation bandwidths of 6, 7 and 8 MHz, and can output 250 mW. It may be reduced to low-power 20 mW with the simple press of a button. If using a single video stream, users can simply switch the STx into NBCOFDM (1.25 MHz/2.5 MHz) mode and double the range without increasing RF power. A video test pattern generator is designed into the STx that can be controlled externally, through the preset switch or programmed to be automatically enabled when the video input is lost. The STx has an ASI input and output, providing the ability to stack or multiplex multiple units. Because it is capable of AES encryption, the STx is ideal for public security monitoring, covert surveillance and other secure transmission applications. It also has a clean and user-friendly local control panel. Its user interface allows quick control of preset selection, RF power, standby modes and a covert display mode.
On the receive side, IMT’sVSRx dual diversity COFDM SD receiveroffers exceptional RF performance combined with high ease of operation. It also features superb H.264 SD decoding. These features are combined in a durable package delivering unequaled value in a high-quality COFDM receiver. The VSRx features AES decryption capabilities, making it ideal for public security monitoring, covert surveillance and other secure transmission applications. Supporting a broad array of video output signals, including ASI and SD-SDI, the VSRx unit also has a composite video output.
The SRx HD/SD dual input diversity COFDM receiver is a ruggedized dual diversity COFDM receiver that combines exceptional RF performance and ease of operation. Built in a durable, weather-resistant package, it features superb H.264 SD and HD decoding and supports a broad array of video output signals, including HD, ASI, HD-SDI and SD-SDI (SDI is auto-switched depending on the signal received). The SRx also has a composite video output, which is down converted to SD when receiving HD signals. The SRx receiver uses standardized cables and requires no special adapters. It also features an Ethernet port for streaming video over a LAN to remote software or hardware decoders. This allows many remote viewers to monitor the same video simultaneously, increasing situational awareness.