Second Coherent Channel Option for NetSDR
The NetSDR Option X2 board adds a second coherent channel input to existing NetSDR radios. The Option-X2 includes a high performance 10 MHz reference input VCO that synchronizes both ADCs to the same reference. This option enables the unused BNC connector on the back of the NetSDR as a second RX input. This board includes a high performance 16 bit ADC, filter bank and separate attenuators. In addition, the new FPGA configuration allows phase adjustments in 32 bit precision of each receiver for beam forming applications. The I/Q data can be formatted as separate I/Q streams for each channel or as a sum or difference of both channels after phase and amplitude adjustment.
Possible uses:
Polarization control
Beam steering
Radio Astronomy Interferometers
MAP-65 receiver
Direction Finding
Noise Antenna subtraction
Dual band simultaneous reception and recording
SPECIFICATIONS
Frequency Range: 0.01 – 34 MHz x2 32bit
Phase Adj. Range: -2pi to +2pi x2 32bit
Amplitude Adj. Range: 0 – 1 x2 16bit TBD
Synchronization : 10 MHz Reference Input
Filters: 100 dB 80% Alias Free BW
Decimation Rate: Variable 40-6400 (in 4 increment)
Output I/Q BW:10 KHz to 800 KHz x2 *NEW*
Output I/Q BW:1600 KHz IQ=RX1+RX2,RX1,RX2
DDC Flatness:
Dynamic Range: 104+ dB
MDS Preamp Off (500Hz): -129dBm 1.8 – 30 MHz
MDS Preamp On (500Hz): -130dBm 1.8 – 30 MHz Analog to Digital Converter: 16bit x2 *NEW*
Preselection: 10 Filters
Attenuators: 0, -10dB, -20dB, -30dB
Sample Rate: 80.000 000 MHz
Connections Active: 3 x BNC (RF 1, Ext Ref, RF 2) , RS-232, USB Setup, Aux, Ethernet, Power, RX Mute.
Ethernet Bandwidth Requirements:
2.00 MHz Output Sample Rate = 64.0Mb/s*16bit IQ
1.00 MHz Output Sample Rate = 48.0Mb/s*24bit IQ 0.50 MHz Output Sample Rate = 24.0Mb/s*24bit IQ 0.01 MHz Output Sample Rate = 0.60Mb/s*24bit IQ
Price: US TBD