SDR-IQ

Specifications    Prices

PC controlled direct sampling SDR receiver. Frequency range 0.0005-30 MHz all-mode, supports spectrum record/playback up to 196 KHz bandwidth. Ideated in USA.

Reference market : amateur-radio

SDR-IQ specifications

General
Frequency coverage
0.0005 ~ 30.0000 MHz [1]
Mode
CW / LSB / USB / AM / DSB / FM
Tuning step
1 Hz min
Receiver
Sensitivity
CW0.3 uV (14 MHz, 10dB S/N)
MDS (Minimum Detectable Signal)
-127 dBm (14 MHz)
Selectivity
user-defined
ADC (Analog to Digital Conversion)
Sample rate66.666 Msps
Resolution14 Bit
DDC bandwidth196 Ksps max
IP3 (3rd order intercept point)
+15 dB
Image rejection
80 dB
Spurious response [2]
80 dBfs max
100 dBfs typ
Features
Memory
Unlimited memory channels
Antenna
BNC 50Ω
Power supply
5 VDC USB
Power consumption
425 mA
Connections
USB2.0
RS-232
Mechanical and environmental data
Dimensions
95 (W) x 32 (H) x 95 (D) mm

  1. Usable down to 100 Hz.
  2. Referenced to ADC max input range.
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SDR-IQ description :

The RF-Space SDR-IQ is a direct sampling receiver that uses a 14-bit ADC and an AT91SAM7S256 processor from Atmel. It offers a wide range of possibilities for extended frequency coverage, starting from only 500 Hz and therefore suitable for VLF monitoring, as well as for spectrum analysis functions and signal demodulation options. The information flow of the ADC is processed by a digital converter (DDC) in order to obtain data in I/Q format to be sent to a PC via USB connection. All filtering and demodulation operations are assigned to the softwares, the latest version of SpectraVue (Moetronix) and SDR-Radio.

On the technical side, the receiver integrates a preamplifier, RF attenuators, and a filter bank in the front-end preselector. The applications include, besides the stand-alone apparatus function, the use combined with a second receiver or transceiver for which it performs Panadapter tasks by displaying the spectrum around the intermediate frequency (IF) value which can be freely set by the operator thus comprising standards such as 455 KHz, 8.83 MHz, 10.7 MHz, 21.4 MHz. From the PC you can record up to 196 KHz of the RF spectrum for delayed playback that uses AM, FM, SSB, DSB, CW demodulation by adjusting bandwidth and resolution of the FFT analysis between 2048 and 262144 points. The FFT is performed with a speed of 50 updates per second acting with a span (interval) of 190 KHz and BW (resolution) of 100 Hz. The following table shows the combination of frequency ranges, IQ data flow, and maximum resolution achievable:

Combination of frequency ranges
SpanI/Q data flowMaximum resolution
5 KHz8.138 Ksps0.031 Hz
10 KHz16.276 Ksps0.062 Hz
25 KHz37.792 Ksps0.14 Hz
50 KHz55.555 Ksps0.21 Hz
100 KHz111.111 Ksps0.42 Hz
150 KHz158.730 Ksps0.61 Hz
190 KHz196.078 Ksps0.75 Hz

It should be mentioned that the SDR-IQ also has an RS232 serial port to directly interface other receivers, among these different Icom and AOR models such as IC-R8500, IC-R9000, IC-R9500, IC R7000, IC-R7100, AR-5000.

SDR-IQ price

We have collected for your convenience the Rf-Space SDR-IQ sale price (Euro) and its trend over time. Useful to guarantee a cheaper purchase of this radio and to put it for sale in the second-hand market. Of course offers, accessories, warranty terms and conditions can lead to different figures.

Price Date Condition
EUR 549.00
(489GBP)
2019-jan Second Hand

SDR-IQ review

Sensitivity
Selectivity
Dynamic range
Spurious response
Audio
Signal functions
Control functions
User friendly
Stars: 1=insufficient | 2=just sufficient | 3=mediocre | 4=good | 5=excellent


Your opinion on merits, defects, experiences, with this radio set is welcome. Write your review, after a technical evaluation by our staff if found suitable will be published on this page. We thank you for your precious contribution.

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