SI-8728A Eight-Channel Narrowband HF Tuner Subsystem

8 Channels, 100 kHz - 30 MHz Frequency Range, 25 kHz Bandwidth Tuner

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DRS Signal Solutions

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+1 301 948 7550


The SI-8728A high-performance tuner subsystem features eight independent HF tuner modules. Each tuner module accepts an RF input in the range of 100 kHz to 30 MHz and provides tuning resolution to 1 Hz. The tuner subsystem allows for independent or phase-coherent tuner operation supporting a variety of system applications. IF outputs of all tuner modules are digitized by 24-bit A/D converters with high dynamic range, then processed digitally and made available as baseband in phase and quadrature-phase (I/Q) data via a single Ethernet interface.

The processed data outputs are packaged according to the packet structure of VITA 49.0 (VITA Radio Transport Standard) for output via the Ethernet interface. It is through this same interface that the HF tuner subsystem is configured and controlled. A real-time clock, which may be synchronized to a 1 PPS reference input, is maintained for time-stamping the processed data.

The subsystem is packaged in a 1U rack-mount chassis and designed to allow stacking of units for very high density systems. The rear panel includes SMA connectors for the RF inputs and for the 1PPS and 10 MHz REF inputs. A duplex SC socket serves as the 1000BASE-SX Ethernet physical interface. For applications requiring fewer than eight tuner modules, the SI-8728A may be optionally populated with any number of tuner modules to a maximum of eight.

The 8728A/MULTI option adds an 8x8 multicoupler internal to the SI-8728A chassis. The multicoupler switches are controlled through the same 1000Base-SX interface as the tuner. 

SI-8728A 8 Channel Tuner Subsystem
Meeting Today's Challenges

The SI-8728A high-performance tuner subsystem features 8 independent HF tuner modules. Each tuner module accepts an RF input in the range of 100 kHz to 30 MHz and provides tuning resolution to 1Hz.

Download the data sheet.

DRS Signal Solutions SIGINT Products
SIGINT Tuners and Receivers

DRS Signal Solutions products are suitable for commercial applications and adaptable for land, sea and air operations across a variety of platforms as well as tactical, man-portable capabilities.

Download the product catalog.

3 Year Warranty

DRS Signal Solutions 3 Year Warranty
SI-8728A is Backed by a 3 Year Warranty

We are committed to providing outstanding product reliability and support, so you can focus on mission success.

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