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The P540B500 wideband tuner from diminuSys spans 500 MHz to 40 GHz with 500 MHz instantaneous bandwidth, fast tuning, low phase noise, control flexibility, output versatility and surprising affordability. Overall tuner gain is adjustable from -20 to +40 dB.

The P540B500 design enables input preselection with bypass, and input preamplification, bypass, or attenuation. The tuner’s wideband output is centered at either 1000 or 1200 MHz, with auxiliary outputs at 900, 120/160 and 21.4 MHz included. All four ports are synchronous and without frequency inversion. Control is by a simple command set via the included Ethernet, serial or USB interfaces.

With its enhanced performance option, the system tunes in 1 Hz increments and can switch between any two frequencies in less than 100 µs. Phase noise at 10 kHz offset is below -105 dBc/Hz when tuned to 40 GHz and well below that for lower frequencies. The P540B500 includes an external frequency synthesizer input to accommodate a user-provided local oscillator. The tuner can change bands, preselection, gain and attenuation in less than 100 ns in this mode, which is tailored to ELINT, SIGINT and COMINT applications.

The P540B500 resides in a low profile 1U rack-mount chassis with custom configurations available. A field replaceable 2.92 mm input connector is standard. Air cooling input and output ports are both on the rear panel. The system operates from 85 to 264 V AC and 47 to 63 Hz. Availability is 30 to 60 days; price for the standard system is $42,500.

Irvine, Calif.