-Frequency range: 225-400 MHz -Output Power: 200 Watts -KVA: 2.6 -Digital Interface: IEEE488 -Class of Operation: AB Linear -RF Input Power: 1mW (0dBm) for full output power -RF Input Signals: CW, AM, FM, Phase and Pulse Modulation -Harmonics: B.W. -Spurious: -60dBc Max -Input VSWR: 2.0:1 nominal -Output Load VSWR: 1.3:1, full forward power output 2:1, 0.5dB turndown nominal infinite, 10dB turndown nominal -AM Distortion (85% D.O.M.): 10% Max -Pulse Rise/Fall Time (typical): 150ns -Noise Power Output: -86dBm/Hz typical (model dependent) -Maximum RF Input: +8dBm -RF Connectors Input: Female Type N, Rear Panel; Output: Female Type N or SC, Rear Panel (model dependent) -AC Input: Power Factor Corrected Universal Input 100-240Vac, 50/60Hz -Efficiency (AC to RF): 16% typical -AM, FM, CW, pulse & phase modulated signal inputs -Field-replaceable modules -Graceful degradation -High efficiency switching power supplies -Standard 19” Rack Mount Configuration
-EW/ECM systems -Communication systems -AM/FM transmitter boosters -TWT replacement -RFI/EMI testing -High power calibration testing
Load VSWR Protection
Series BHE amplifiers provide load VSWR protection via an electronic power output turndown system employing negative feedback techniques. The system is self-correcting as a function of load VSWR to infinity, at any phase angle. The typical response time is 60 μsec.
Input/Output Overdrive Protection
A leveling loop system protects the amplifiers from input overdrive signals of up to +8 dB. Under an overdrive condition, the output power is controlled at a level 2 to 10% above the rated output power at normal input level conditions. A power overshoot will be present at the beginning of the overdrive condition, which is a function of the amount of overdrive. Note that this characteristic can be used to obtain a 1 to 3 dB output (or more depending on model) power increase for narrow pulses with a low duty cycle.
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