K2 UHF-TV Cavity Amplifier - CPI - #1

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April 2007 K2D130W K2 Series Digital IOT K2 UHF-TV Cavity Amplifier The EIMAC K2D130W Klystrode® Inductive Output Tube (IOT) is a high efficiency amplifier 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 amplifier, is comprised of a single tube, K2D130W, and associated hardware assembly, HA2000. The cavity amplifier covers the entire UHF TV band from 470—815 MHz (bands IV and V). The K2 amplifier series has an advanced Electro-Magnetic- Compatibility (EMC) designed input circuit, which isolates the RF input from the transmitter DC high voltage. The input filter 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. • Designed for 8VSB operation • Peak power capabilities of 130 kW with average power of 31 kW • High gain amplifier: 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 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). 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. Made in USA