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LD7111 Datasheet(PDF) 2 Page - NEC |
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LD7111 Datasheet(HTML) 2 Page - NEC |
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2 / 4 page  2 LD7111 SERIES GENERAL CHARACTERISTICS ELECTRICAL Frequency ……………………………………………… 17.3 to 18.4 GHz Output Power ………………………………………… 1.7 kW Heater Voltage ………………………………………… 6.5 V Heater Current ………………………………………… 3.2 A Cathode Type ………………………………………… Indirectly Heated, Impregnated Cathode Warm-up Time …………………………… 300 s MECHANICAL Dimensions …………………………………………… See Outline Weight ………………………………………………… 27 kg approx. Focusing ……………………………………………… Permanent Magnet Mounting Position …………………………………… Vertical (Cathode down) Cooling ………………………………………………… Forced Air Electrical Connections ……………………………… See Outline RF Connections Input ………………………………………………… Mates with UG-419/U Flange Output ……………………………………………… Mates with UG-419/U Flange Cavity Tuning Method ……………………………… 8-12 Channel Preset Tuning (Hand Tuner is also available) ABSOLUTE RATINGS ( Note 1, 2 and 3 ) ELECTRICAL Min. Max. Unit Heater Voltage ………………………………………… 4.5 7.8 V Heater Surge Current ……………………………… – 7.0 A Heater Current ………………………………………… – 4.5 A Heater Warm-up Time ……………………………… 300 – s Body Voltage ………………………………………… – 10.0 kV Body Current ………………………………………… – 25.0 mA Collector Voltage ……………………………………… – 10.0 kV Collector Current ……………………………………… – 1.0 A Cathode Current ……………………………………… – 1.0 A DC Input Power ……………………………………… – 9.3 kW Load VSWR Normal Value ……………………………………… – 1.2 : 1 Instantaneous Value ……………………………… – 1.5 : 1 MECHANICAL Collector Temperature ……………………………… – +250 °C Cooling Air Temperature …………………………… –10 +50 °C Collector Air Flow …………………………………… 515 – kg/hr Body Air Flow ………………………………………… 83 – kg/hr Gun Air Flow ………………………………………… 41 – kg/hr ENVIRONMENTAL Ambient Temperature Operating …………………………………………… +5 +50 °C Storage ……………………………………………… –50 +70 °C |
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