Introduction
The NetSDR radio is a high performance networked SDR with 1.6 MHz bandwidth and 2.0 MHz output
sample rate. The NetSDR uses a high performance 80 MHz, 16 bit ADC with both dithering and ran-
domization for best performance. The output I/Q bandwidth is configurable via software. PC communi-
cations are handled over a 100 base-T port using 24 or 16 bit I/Q words.
The unit is compatible with the
Moetronix SpectraVue and SDR-Radio software. The software includes
analog and digital mode demodulation and I/Q capture of spectrum at up to a 1.60MHz BW. The SDR-
Radio software allows the use of the NetSDR over the internet. The full 1.6 MHz waterfall and demodula-
tion audio can be transported via a 10 KB/s link. For those interested in writing their own applications,
RFSPACE supplies a fully documented protocol for communicating with the hardware as well as an open
source starter application for MacOS, Windows and Linux. There is no need to calculate the downcon-
verter DSP parameters. The NetSDR just needs the center frequency, attenuator and preselector filter
settings, output sample rate and mode to begin streaming data. The NetSDR utilizes straight TCP/IP and
ethernet for all communications. This offers the highest possible performance due to the highly opti-
mized ethernet drivers on PC, Mac and Linux systems.
The NetSDR packets are fully routable. This means that the receiver can be placed at remote locations.
Multiple receivers can also be combined and it’s data transported over a higher data rate ethernet pipe
using simple switches and routers. In this application, each NetSDR can be set to a different IP address
or port.
7
Jan 2012
RFSPACE, Inc.
NetSDR Wideband Digital Radio User’s Guide
