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| DATA S H E E T HIGH POWER KLYSTRON FOR GROUND TERMINALS LD7111 SERIES 17 GHz BAND, 1.7 kW, HIGH EFICIENCY, HIGH POWER GAIN GENERAL DESCRIPTION The series of NEC LD7111 is a five-cavity Klystron Amplifier and ideal for use in the earth-to-satellite communication systems. These are designed for operating at 1.7 kW CW over the frequency range of 17.3 to 18.4 GHz. The instantaneous bandwidth of minus one-decibel is at least 90 MHz over the entire 1.1 GHz range. All tubes are forced-air-cooled at any power level. An automatic channel tuner, which changes the operating frequency very quickly and simply, is available in all the series. Furthermore, they are of rugged and reliable design offering long life service. NEC LD7111 series is compatible with VKU7791Z6 by using an additional adapter. FEATURES TM Compact and Light Weight (27 kg approx.) TM High Efficiency (The DC to RF conversion efficiency is typically 23 % or higher.) TM High Power Gain TM Long Life and High Stability TM Simple Cooling System (forced-air-cooled) TM Automatic Channel Tuner (8-12 Channels) Hand Tuner model is also available. TM Permanent Magnet Focusing TM Rugged Construction For safe use of microwave tubes, refer to NEC document "Safety instructions to all personnel handling electron tubes" (ET0048EJVUM00) The information in this document is subject to change without notice. Document No. ET0404EJ2V0DS00 (2nd edition) (GC-1069) Date Published August 1998 M Printed in Japan (c) 1994 LD7111 SERIES GENERAL CHARACTERISTICS ELECTRICAL Frequency ...................................................... Output Power ................................................ Heater Voltage ................................................ Heater Current ................................................ Cathode Type ................................................ Cathode Warm-up Time ................................. MECHANICAL Dimensions ................................................... Weight ......................................................... Focusing ...................................................... Mounting Position .......................................... Cooling ......................................................... Electrical Connections .................................... RF Connections Input ......................................................... Output ...................................................... Cavity Tuning Method .................................... Mates with UG-419/U Flange Mates with UG-419/U Flange 8-12 Channel Preset Tuning (Hand Tuner is also available) See Outline 27 kg approx. Permanent Magnet Vertical (Cathode down) Forced Air See Outline 17.3 to 18.4 GHz 1.7 kW 6.5 V 3.2 A Indirectly Heated, Impregnated 300 s ABSOLUTE RATINGS ( Note 1, 2 and 3 ) ELECTRICAL Heater Voltage ................................................ Heater Surge Current .................................... Heater Current ................................................ Heater Warm-up Time .................................... Body Voltage ................................................ Body Current ................................................ Collector Voltage ............................................. Collector Current ............................................. Cathode Current ............................................. DC Input Power ............................................. Load VSWR Normal Value ............................................. Instantaneous Value .................................... MECHANICAL Collector Temperature .................................... Cooling Air Temperature ................................. Collector Air Flow .......................................... Body Air Flow ................................................ Gun Air Flow ................................................ ENVIRONMENTAL Ambient Temperature Operating ................................................... Storage ...................................................... +5 -50 +50 +70 C C - -10 515 83 41 +250 +50 - - - C C kg/hr kg/hr kg/hr - - 1.2 : 1 1.5 : 1 Min. 4.5 - - 300 - - - - - - Max. 7.8 7.0 4.5 - 10.0 25.0 10.0 1.0 1.0 9.3 Unit V A A s kV mA kV A A kW 2 LD7111 SERIES TYPICAL OPERATION (Note 3, 4 and 5) Unit Frequency ......................................................... Heater Voltage (Note 4) ....................................... Heater Current ................................................... Body Voltage ...................................................... Body Current ...................................................... Collector Voltage ................................................ Collector Current ................................................ Cathode Current ................................................ DC Input Power ................................................ 17.7 6.5 3.2 9.4 3.0 9.4 0.85 0.85 8.0 100 1.8 42 90 530 2,000 85 34 43 GHz V A kV mA kV A A kW mW kW dB MHz kg/hr Pa kg/hr Pa kg/hr Driving Power ................................................... Output Power ................................................... Power Gain ...................................................... Band Width (-1 dB) ............................................. Collector Air Flow ............................................. Collector Air Pressure Drop ................................. Body Air Flow ................................................... Body Air Pressure Drop ....................................... Gun Air Flow ...................................................... Note 1 : Absolute rating should not be exceeded under continuous or transient conditions. A single absolute rating may be the limitation and simultaneous operation at more than one absolute rating may not be possible. Equipment design should limit voltage and environmental variations so that ratings will be exceeded. Note 2 : The Klystron body should be at ground potential in operation. Note 3 : All voltages are referred to the cathode potential except the heater voltage. Note 4 : The optimum operating value is shown on a test performance sheet for each tube. Note 5 : Characteristics and operating values on this Data Sheet are based on performance test. These values may be changed as a result of additional information or product improvement. NEC should be consulted before using this information for equipment design. This data sheet should not be referred to a contractual specification. NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from use of a device described herein or any other liability arising from use of such device. No license, either express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of NEC Corporation or others. 3 LD7111 SERIES LD7111 SERIES OUTLINE (Unit in mm) (260) 234.7 0.5 (208) ( 38) A (147) 33 1.5 (180) 5.8 0.1 106 3 (128) 133.4 0.25 142.2 0.5 (177.8) 0.01 6.3 +0.05 - (10) Detail B B 139.7 0.25 252.5 0.25 (275) 4 - 5.6 (125) Electrode Heater Heater-Cathode Color of Lead Yellow White Lock / Unlock Shaft Channel Shaft Body Col & Thermostat 5- 5 115 1 Terminal Thermostat (Nomally Close) 4-No.4-40 UNC 17.5 0.3 depth 5.8 MAX. RF Output (111) UG-419 / U 27 0.3 (8) 5.80.1 ( 70) (208) (14.65) (6.5) 15.5 0.3 (201) (224) 26.15 0.3 RF Input 36.84 0.3 36.84 0.3 UG-419 / U View from A 190 2 148 2 (136) 390 MAX. (13.4) (7) (335) |
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