Description
Details:
- Model: 489A
- Input/output impedance is : 50- ohms
- Type :,/b>N female connectors
- Sensitivity: modulation input of >-20 V peak reduces RF output by >/=20 dB from DC to 50 kHz
- Frequency response is DC to 500 kHz (3 dB)
- Pulse response is <1 µs rise and fall times
- Front-panel gain adjust
- Cathode current meter
- Modulation input
- Microwave TWT Amplifiers
- Amplification of frequencies from 1 to 12.4 GHz is accomplished in four ranges by the Hewlett-
- Packard medium power microwave amplifiers. Each delivers at least 1 watt for a 1 milliwatt input – a gain of at least 30dB. All four TWT amplifiers have pr ovisions for amplitude modulation, and since the internal modulation amplifier is dc-coupled, remote pr ogramming and power leveling are possible.
- Sensitivity is high for large output power chan ges from relatively small modulation signals, obviating the need for an external modulation amplifier.
- The dc amplifier has a gain of 20 dB and exhibits a passband from dc to 500 KHz when modulation index in the neighborhood of 1 dB, as might be encountered in RF leveling. When the modulating levels are high, in the region of 20 Volts, the passband will be a minimum of 100 KHz: a 20 volt change at the MOD INPUT produces a minimum of 20 dB off/on ratio. Specifications
Output power: 1 watt for an input of 1 miliwatt
- GAIN: : 30 dB at rated output
- Input/Output: Impedance 50 Ohms; Connectors: Type N female
- Noise Figure: >30dBAmplitude Modulation:
- Sensitivity: : modulation input of > -20V peak reduces FR output by > 20dB from dc to 50 ohms.
- Freq. Response: : dc to 500 KHz (3dB).
- Size: : 5.5”x 16.75”x18.375”
- Weight : :
- 33 lb
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