The R-1550A TEMPEST Receiver includes everything you need to operate from a frequency range of 100 Hz to 2 GHz. With options, the frequency range may be extended as low as 20 Hz or as high as 40 GHz.

The main features include:

Selectable Tuning Resolutions

Use the arrow keys below the display to select the tuning digit. The selected digit blinks. Use the step key to perform manual step tuning. The step size is determined by the selected digit. The tuning knob also tunes at the selected digit. Frequency Resolution is 0.1 Hz from 100 Hz to 250 kHz; 1 Hz from 250 kHz to 15 MHz; and 100 Hz from 15 MHz to 2 GHz.

Synthesizer Design

Synthesizer design provides you with programmable frequency control. Any frequency may be entered from the keypad with up to seven digit resolution.

AM/FM Detector Switch

Automatically selects audio source. Gain controls are provided for headphone use.

Auxiliary Video Output

For Z-axis display; provides a direct connection for video monitoring use.

Z-Axis Output

Provided on the rear panel for “rastering” of repetitive signals. Automatic remote mode selection is provided by the host computer.

Low Noise Figure

The nominal noise figure is 6 dB. The noise floor in a 100 Hz bandwidth is -41 dBμV. The noise floor in a 10 kHz bandwidth is -21 dBμV. There is 80 dB image rejection over the entire frequency range. The noise floor will improve by at least 6 dBμV when the R-1550A Receiver is configured in the DSI-1550A TEMPEST Test System.

Preselection Filters

There are nine bandpass filters that may be individually selected during tuning corresponding with the receiver band and the tuned frequency. Filter values are 200 MHz Low Pass, 200-350 MHz, 350-550 MHz, 550-750 MHz, 750-1000 MHz, 1100 MHz Low Pass, 1.0 GHz-1.3 GHz, 1.3 GHz-1.6 GHz, and 1.6 GHz-2.0 GHz.

Technical Specification - Tempest Receiver

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