Second version of the popular SDR receiver has built-in 10/100base Ethernet adapter, which allows using up to 400kHz IF bandwidth over the network. New design also includes new more powerful processor, now enabling to use full capacity of the radio circuitry making it up to 10 times more powerful.
By using compatible SDR software, it is now possible to see a 400kHz wide chunk of radio spectrum at once, given the software supports it. Complete list of compatible free SDR software is listed in Specifications.
SDR MK1.5 Andrus is implementing existing industry standard protocols of RFSpace. Radio has NetSDR for networking support and SDR-IQ for serial communication implemented, but it does not identify itself as RFSpace radio (for a very good reason that this would violate their rights!), therefore it may not be compatible with RFspace software.
Another improvement over the previous version is internal clocking system, what is now all synchronous with the output sample rate. Thanks to this approach, there is significantly less noise on the received signal once it reaches your computer and this is well visible (or absent thereof) on the SDR software screen!
The SDR MK1.5 ‘Andrus’ is a fully digital design with two identical RF frontends which can be used simultaneously, so one channel can be used for monitoring, while another one can be used for scanning around the band. The presence of two channels also enables combining the two signals, so in urban areas it is possible to use the second channel for noise cancelling! This feature makes the MK1.5 a unique design as there is currently no other amateur/consumer SDR radios available what would allow that!
Technical Specification :
5kHz to 30MHz frequency range
64MHz maximum internal sampling rate
Compatible with most free SDR software, such as SDR-Radio, Winrad, Linrad, HDSDR, CuteSDR etc.
User Programmable AGC (automatic gain control) with enhanced Power Detector
123dB total dynamic range with AGC (80dB with AGC off)
0.02Hz tuning resolution
10/100Base Ethernet interface for 400kHz sample rate through network (NetSDR protocol mode)
48kHz/16-bit Ch A and Ch B simultaneous USB audio output (looks like a standard USB audio interface to computer)
234kHz single-channel or 2x117kHz dual-channel USB output with libusb driver
Comprehensive daughtercard for up to 2.2GHz downconverter and input bandpass filters available on Q2 2013
On-board RS232TTL compatible serial port and I2C interface for driving external peripheral
Powered from USB port (requires Y cable for drawing power from two USB sockets simultaneously) or external 5VDC adapter (not included). (custom PoE can
2x BNC Antenna connectors (Mfg: Rosenberger)
Max current consumption 600mA
Open software and hardware design for DIY development, filter upgrades etc.
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