High performance SDR Receiver in a small box
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Small-size ColibriDDC receiver is intended to receive the signals in HF frequency band 0.09 to 55 MHz, and also with the help of external filters to receive frequencies up to 800 MHz and work together with PC. It was designed in accordance with the principle of direct digital signal sampling by high speed analog-digital converter. Such architecture allows to get rid off additional noise of analog cascades and makes the air sound natural and transparent. Local network interface allows to use the device remotely and also allows to connect simultaneously several receivers to one PC for solving various signal receipt tasks. ColibriDDC is a good low-cost receiver to review the technology of direct sampling which can be used in different spheres.
Note! The receiver doesn't contain band pass filters and can be overloaded by the strong signals from air.
ExpertSDR2 program with adapted interface for the receiving mode is used together with the ColibriDDC receiver. At the present moment software works in the receiving mode and maintains two independent channels with the bands to 312 kHz. DSP library, developed by the company Expert Electronics, allowed to improve the receipt quality and to higher the software reliability. Two OS are supported: Windows 8 and Linux Ubuntu.
Receiver's block diagram
|Receiving bandwidth, MHz||0.01 - 55 (0.01-62.5)|
|Receiving bandwidth in all Nyquist zones, MHz||0.01– 800|
|Spectrum scope bandwidth (up to), MHz||62.5|
|Amount of independent receiving channels||2|
|Blocking Dynamic Range (BDR), dB||110|
|IMD3 Dynamic Range, dB||90|
|Image channel suppression, dB||>110|
|Supply voltage range, V||4.5...5.5|
|Maximum consumption current, A||0.64|
|RF ADC clock frequency, MHz||125|
|RF ADC resolution, bit||14|
|Local oscillator stability, ppm||+/- 0.5|
|Built-in attenuator, dB||0, -20|
|Built-in audio DAC resolution, bit||24|
|Dimensions W x H x L, mm||64x24x112|
* - with a help of the external software can be supported a larger amount of modes
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