Nuevo e interesante SDR

Hola,

Aunque casi salen nuevos SDR a diario, este me ha llamado la atención.

Un estonio llamado Andrus Aaslaid se ve que dispone de tiempo, dinero y ganas y ha fundado una empresa llamada Satrian y se han puesto a diseñar un SDR con lo último de Analog Devices (el fabricante de los chips).

El resultado son dos placas, una es el receptor SDR "normal", llamado Andrus (a buen precio), y una segunda placa llamada TX8M que es la que marca la diferencia.

Andrus

E-Bay 261166823767 360€

Escribió:

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 be fitted)
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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TX8M

Escribió:

The non-definitive list of building blocks:

AD9957 based 0..450MHz exciter with CW and direct 14-bit IQ modulation modes (max bandwicth is yet to be determined, but at least 200kHz is realistic)
ADF4351 based DSS signal synthesizer, 30MHz to 4GHz
ADL5801 up/downconverter, 1MHz .. 4GHz (runs off the ADF4351)
ADL5330 quadrature downconverting mixer, 4MHz .. 2GHz
ADS1675 24-bit I/Q sidechain (with MK1.5 it will give about 200kHz bandwith)
AD8302+ADL5513 based Vector Network analyzer, working LF to 2.7GHz as 60dB vector analyzer (with phase and reflection) and LF to 4GHz as just 90dB scalar network analyzer.
ADRF6510 1 to 30MHz filters in a configuration what allows notch and bandpass filtering in 1MHz steps

Not counting preamps, VGA-s, RF switches, on-board ADC-s and DAC-s etc.

By adding the TX8M daughtercard, the SDR MK1.5 radio is now capable of

receiving up to 2GHz.

able to transmit up to 450MHz without external filtering and up to 4.5GHz with external filters in front of power amplifier

some outboard filters can get receiver working up to 6.4GHz.

with built-in dedicated LNA preamp, the inexpensive bandpass filter can be added and the radio becomes a really good tool for receiving 400MHz satellites and 1.4GHz cosmic radio waves monitoring device.

allows measuring the cable losses, plot filter characteristics, check antenna and feeder matching etc.

a RF signal generator from kHz range to 450MHz

a moderate RF signal generator from 30MHz to 4GHz

73, Máximo - EA1DDO