questions about softrock transciever - $60
My friends and I have been trying to find the specs of the softrock transceiver cards but have been unsuccessful. We want to know if these cards can be used as product development platform for SDR apps. I would appreciate it if someone can help with the following questions:
1.Does the hardware work with software like GNU radio?
2.Does the platform have an API? are these open source?
3.What is the bit length of I/Q?
4.Can I / Q be parsed into bins for later processing with software like GNU radio?
5.What waveforms can be programmed on the platform?
6.For Rx (hardware), what is sensitivity, loss, and noise?
7.For Tx (hardware), what is loss, noise?
8.For Tx/Rx what is isolation between two?
9.At ADC/DAC entry/exit, what is the voltage? If Tx signal generated, what is strength?
10. As sound card being used, the bandwidth will be limited to 20KHz? At what stage is the down/up conversion done? Wouldn't the decimation take place after the down conversion(after digital conversion)?
Where is the decimation of signal done? At what factor? Is this programmable?
11.Is there any filtering done (anti aliasing or other)? If yes, where in the chain on device? Filter insertion loss (db)?
12.Is there any processing done on the host computer?
13.How does the Tx stage work? A numeric is created to reflect the I & Q, then it is interpolated to get the real signal. These are then piped to digital upconvertor on platform and then to antenna?
14.Is there a way to loop back a signal without antenna to test a signal block?
15.Can the platform tx and rx at same time? If not, what is the switching time?
16.How is the USB platform connected to antenna? Impedance?
17. Where can the schematic / device layout be found?