The TTX54/VTX54 Series of rugged 54 Cubic Inch Transmitters are available for Telemetry (TTX) or Video (VTX) applications. True FM modulation is used for digital data and digital or analog video in airborne, mobile, and groundinstallations. In wide use in Aircraft, Target Drone, UAV, RPV, Helicopter, and Telemetry and Data Link applications, these units are available for VHF, UHF, full L- and S- Band through 18 GHz fixed frequency or frequency agile operation. Many optional features are available to meet most system requirements including output power up to 100 watts (depending on frequency band) and data rate capability beyond 20 Mbps. Units meet the EMI requirements of MIL-STD-461 and IRIG 106-96 Telemetry Standards. The transmitters are designed using surface mount technology with phase-locked loop and microstrip techniques to keep the physical package size to a minimum and efficiency -reliability maximized. An internal isolator is used above 1 GHz to allow continuous operation into an infinite VSWR without permanent degradation. Operation over a temperature range of -20°C to +71°C baseplate is standard, extended ranges available. The TTX54/VTX54 Series can be ordered with optional data rate response, pre-mod filter, one or two audio or data subcarriers, RS232 or 422 input subcarriers, CCIR-405 pre-emphasis for NTSC, PAL, or SECAM video modulation, remote standby, dual output power, optional connector types, 12 or 28 Vdc power, DC coupling,remote frequency selection, extended temperature range, and 19-inch rack-mounting chassis.