Software Defined Radio -SDR MK1.5`Andrus`!
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!
schematics diagram of SDR MK1.5 ‘Andrus’
schematics diagram of SDR MK1.5 ‘Andrus’