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The RTR 2654 Pentek, Inc.
The RTR 2654 RF Sentinel Intelligent Signal Scanning system automatically tunes and records signals within 500-MHz swaths of bandwidth from 800 MHz to 26.5 GHz.

Signal Recorder Integrates RF Tuner

A compact rack-mount solution for signal-intelligence (SIGINT) and communications-intelligence (COMINT) applications combines an intelligent scanning signal recorder with a wideband RF/microwave tuner. The RTR 2654 RF Sentinel Intelligent Signal Scanning system from Pentek automatically tunes the signal spectrum from 800 MHz to 26.5 GHz and records bandwidths as wide as 500 MHz using the Sentinel intelligent signal scanning software.

The combination tuner/recorder uses one of the company’s model 78141 Jade transceiver modules as the data acquisition subsystem. One of the transceiver’s dual 3.2-GSamples/s 12-b analog-to-digital converters (ADCs) is used at 2.8 GSamples/s for data conversion, coupled to the 500-MHz intermediate-frequency (IF) output of an RF/microwave tuner front end. A digital downconverter (DDC) provides frequency zooming in steps of 140, 280, and 500 MHz. “The RTR 2654 Sentinel recorder greatly expands the scanning spectrum over previous Pentek products to 26.5 GHz, covering the vast majority of popular RF signal bands,” said Rodger Hosking, vice-president of Pentek.

The compact rack-mount assembly simplifies automated signal monitoring and detection over its wide bandwidth, with coverage of any range (up to 500 MHz wide) from 800 MHz to 26.5 GHz. The frequency can be covered in consecutive bands, with the stop frequency of the previous sweep becoming the start frequency of the next sweep. A user can set any band for continuous real-time monitoring and recording, based on programmed signal strength threshold levels that trigger recordings of signals in the covered frequency range. The detected signals and recorded data can be used to create a waterfall spectrum display for each recording. Once a signal of interest is detected, the real-time recorder can capture and store hundreds of terabytes of data to disk, allowing users to store data spanning multiple days.

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