K2 UHF-TV Cavity Amplifier
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K2D130W K2 Series Digital IOT K2 UHF-TV Cavity Amplier • Designed for 8VSB operation • Peak power capabilities of 130 kW with average power of 31 kW • High gain amplier: 22 dB minimum • Long life, high reliability with dispenser type cathode and pyrolytic graphite grid • Single tube and circuit: 470 to 815 MHz • User-friendly tuning • Tube replacement does not require disconnection of power supply or cooling water • Compact size with “collector (water) down” • Water-cooled collector and output cavity. Air-cooled electron gun and anode. • Made in the USA - ISO 9001 facility Made in USA The EIMAC K2D130W Klystrode® Inductive Output Tube (IOT) is a high efciency amplier tube for use in digital UHF television service as the output stage of DTV transmitters. The K2 series is suitable for use with 8VSB, COFDM and similar modulation schemes. The K2 cavity amplier, is comprised of a single tube, K2D130W, and associated hardware assembly, HA2000. The cavity amplier covers the entire UHF TV band from 470—815 MHz (bands IV and V). The K2 amplier series has an advanced Electro-MagneticCompatibility (EMC) designed input circuit, which isolates the RF input from the transmitter DC high voltage. The input lter circuit is optimized for the sharp rise-time, short duration pulses of DTV, simplifying transmitter pre-correction. The input circuit has a stable, out-of-theway storage position and utilizes a cam-guided insertion mechanism to ensure positive connection to the IOT. April 2007 The input cavity, the output cavity, focus magnet assembly, arc detector, water-jacket and load coupler are mounted on a rugged wheeled support stand which is compatible with transmitters from all manufacturers. Electron gun and cavity air-cooling is improved with the new K2 air plenum design. Tube replacement and maintenance is a simple matter for one person without requiring hoists or removing the cavity assembly from the transmitter cabinet. Coolant lines or power supplies do not have to be disconnected. In DTV digital transmission, the K2D130W Klystrode® IOT can be used at up to 130 kW peak power with average power levels of 30 kW for 8 VSB operation (for details please contact Eimac Division, CPI Inc., Klystrode® IOT Applications Engineering).