RigExpert Fobos SDR Wideband Software-Defined Radio Receiver

RigExpert Fobos SDR Wideband Software-Defined Radio Receiver is a compact, USB-powered receiver for radio monitoring, signal analysis, satellite reception and experimental RF work. It covers a continuous main range from 50 MHz to 6 GHz, with auxiliary HF coverage from 100 kHz to 25 MHz, providing wide spectrum access from a single unit.

Wideband Reception with 14-Bit Resolution

A 14-bit ADC and an IQ sample rate of 50 MS/s provide up to 50 MHz of instantaneous bandwidth. This makes it possible to view and record wide sections of spectrum at once, which helps with band surveys, signal identification and capturing short transmissions.

Coherent HF Direct Sampling

In addition to the main RF channel, Fobos SDR has two coherent direct-sampling inputs, HF1 and HF2, running at 2 × 25 MS/s. Because the channels are coherent, they support diversity reception, correlation measurements and phase-difference direction finding on HF.

Clock Synchronisation and Power

A 10 MHz external clock input and a permanent 10 MHz clock output allow synchronisation with reference sources or other receivers. You can select the internal or external clock source through the API. The unit runs from USB 3.0 at 3.8–5.5 V nominal and draws 450 mA idle, 670 mA in direct-sampling mode and 850 mA in full-band operation.

Software Compatibility

RigExpert Fobos SDR supports μSDR natively, which is the recommended software. It also works with SDRSharp, HDSDR, GNU Radio, SDR++, SDRangel and SatDump. Plugins, SoapySDR support and a Windows/Linux API are available for custom integration.

Basic Specifications

• Product designation: RigExpert Fobos SDR.
• Main frequency range: 50 MHz–6 GHz.
• HF direct-sampling range: 100 kHz–25 MHz.
• ADC resolution: 14 bits.
• Sample rate: 50 MS/s IQ; 2 × 25 MS/s direct sampling.
• Bandwidth: up to 50 MHz.
• Interface: USB 3.0.
• Clock: 10 MHz external input and output.
• Dimensions: 130 × 60 × 16 mm.
• Net product weight: 143 g.