The high performance SDR-IP is an internet protocol (TCP/IP) software defined receiver with 1.8 MHz bandwidth.  It offers the ultimate versatility for scientific research, radio astronomy, shortwave listening and amateur radio.  The SDR-IP uses a high performance 80 MHz, 16 bit ADC with both dithering and randomization for best performance. The output I/Q bandwidth is configurable via software. PC communications are handled over a 100 base-T port using 24 or 16 bit I/Q words.

The SDR-IP is a complete plug and play solution. As opposed to other SDRs in the market, there is no need for additional preamplifiers, preselectors or code development. The unit is compatible with the Moetronix SpectraVue software that will have you up and running in minutes. This software includes analog mode demodulation and I/Q capture of spectrum at a 2 MS/s sample rate. For those interested in writing their own applications, RFSPACE supplies a fully documented API for communicating with the hardware. There is no need to calculate the downconverter DSP parameters. The SDR-IP just needs the center frequency, attenuator and preselector filter settings, output sample rate and mode to begin streaming data. Other solutions require complicated USB interfacing that is platform specific. The SDR-IP utilizes straight TCP/IP and ethernet for all communications. This offers the highest possible performance due to the highly optimized ethernet drivers on PC, Mac and Linux systems.

The SDR-IP packets are fully routable. This means that the receiver can be placed at remote locations. Multiple receivers can also be combined and it’s data transported over a higher data rate ethernet pipe using simple switches. In this application, each SDR-IP can be set to a different IP address or port. Multiple receivers using this architecture offer the greatest performance and versatility.



Frequency Range: 0.01 - 34 MHz *

Digital Down Converter: Xilinx FPGA

Synchronization : Phase and Frequency (Opt. 01-02)

PC Interface: Ethernet 100 base-T  (UDP/TCP/IP)

Filters: 120+ dB 90% Alias Free BW

Decimation Rate: Variable 40-2560 (in 10 increment)

Output Sample Rate: 32 KHz to 2.0 MHz @ 24b IQ

DDC Flatness: <0.1 dB

Dynamic Range: 105+ dB

MDS ADC Low Gain (500Hz): -128dBm 1.8 - 30 MHz

MDS ADC High Gain  (500Hz): -129dBm 1.8 - 30 MHz Analog to Digital Converter: 16bit w/ Dither
Digital to Analog Converter: 14bit @ 200 MHz

Preselection: 10 Filters

Attenuators: 0, -10dB, -20dB, -30dB

Sample Rate: 80.000 MHz

Memory: 65536 x 16 bit samples (256K x 16 option)Operating Temperature: 0C - 40C

External Radio Control: Built-in RS-232 port

Dimensions: 210 x 70 x 180 mm

Display: 16 x 2 Character LED LCD

Power: 5 Volts DC @ 1.5 Amp **

Connections: 4 x BNC (RF In, Ext Ref, Trigger, IF Out) , RS-232, Pulse Out, Ethernet, Power
Compliance: CE, FCC, IC

Ethernet Bandwidth Requirements:

2.00 MHz Output Sample Rate = 64Mb/s *16bit IQ

1.33 MHz Output Sample Rate = 64Mb/s

0.50 MHz Output Sample Rate = 24Mb/s

0.10 MHz Output Sample Rate = 4.8Mb/s


Internal Downconverter

Internal ULN 10 MHz Phase/Frequency Lock

Professional Networked SDR

Available Options

OPTION 01 - 02: Adds ultra low noise OVCXO
(+/- 1ppm temp stability) plus frequency locking to 10 MHz reference. Includes Trigger IN/OUT to lock phase of multiple receivers at same or multiple locations.

OPTION 03: Expands capture buffer in real mode from 65536 to 262144 point for 305 Hz RBW @ 80 MHz sample rate.

The  SDR-IP can be configured with a ultra low phase noise encode clock option 01. This oscillator can be locked to a 10 MHz reference. A trigger option allows the synchronization of multiple SDR-IP receivers to trigger signals or 1PPS pulses from GPS to within 12.5 ns. This allows many SDR-IP receivers to be used in aurora research, ionospheric studies, pulsar astronomy,  and interferometry.

(c) 2009 RFSPACE, Inc..

The SDR-IP™ is marketed, sold and warranted by RFSPACE, Inc. under license from Moetronix, Co., Atlanta, USA.
© 2002 RFSPACE, Inc. All rights reserved.
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The digital down converter used in the SDR-IP is very high performance. The digital filters offer over 120dB of image rejection in a 90% of Fs bandwidth and less than 0.1 dB of passband ripple. This gives a very efficient 1.8 MHz usable BW for a 2.0 MHz output sample rate. The high performance receive modes use 28-32 bit precision and are rounded to 24 bits before being sent to the PC. The Digital Down Converter (DDC) does not require loading of any coefficients. The filter is automatically configured by specifying the decimation rate. This makes it extremely easy to control and program the SDR-IP.

The analog front end uses a high dynamic range preamp with a bank of 10 preselector filters and 2 switchable attenuators. RF switching uses relays for better IMD.

The Moetronix SpectraVue software now offers 2.097152 Million point FFTs in the 32 KHz to 2 MHz I/Q modes. That is 0.95 Hz resolution at 2 MHz BW and 15 milliHz at 32 KHz BW.

When not externally locked, the optional REFLOCK oscillator has a temp stability of +/- 1.0 ppm over temperature (0-50C). The stability is typically much better than this since this is an OCXO and the temperature is stabilized. The phase noise at 10 KHz offset  is better than -170 dBc/Hz typical.

The SDR-IP IF output is driven by a 200 MHz, 14bit DAC. This IF output can be configured to output a coherent CW carrier at the DDC center frequency, a copy of the ADC spectrum or a noise pedestal.

SDR-IP  is built for upgradeability. Future PC interfaces or more powerful FPGAs can be accommodated by just replacing the digital interface board. There is also room inside for a plug-in frequency downconverter.

The SDR-IP is housed in a solid aluminum, shielded extruded enclosure. The SDR-IP is FCC and CE certified.

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Products, technical data/technology, and services of RFSPACE INC. ("RFSPACE") are subject to U.S. export controls under the applicable laws and regulations of the United States. Commodities may not be exported or re-exported, either directly or indirectly to the following countries: Cuba, Iran, Sudan, North Korea or Syria. Diversion contrary to U.S. law is prohibited. In addition, commodities may not be exported or re-exported to entities and persons that are ineligible under U.S. law to receive U.S. product, technology and/or software.


Our products are proudly designed, manufactured and assembled in the USA.