LF Transmission with Gnuradio/USRP

Dear GNU Radio gurus,

I have sent this before but it might have not reached you guys.
Excuse me some basic questions. Point me to another forum or information
site if this is not the right place…

we are supposed to pre-develop an inductive coupling radio transmission
system somewhere between 100khz and 1Mhz with low data rate.
Nothing decided yet (modulation scheme, frequency, transnmit power, …)

I am thinking of Gnuradio on USRP with LFRX/TX as a kind of generic
development platform for transmitter and receiver.

We are experienced in linux and python and others but we haven’t
digged very much into GNU Radio yet.

Can we do simple modulations like FSK, ASK and OOK easily?
I expect we will get a simple spectrum analyzer capability with the
USRP receiver, right?

I am not sure I fully understand what is implemented on LFRX/TC from
Ettus R.? Only ADC and DAC or also ome amplifiers and LP filter?
Where can we find specifications?

Any recommendations to my project intention very much appreciated!

thanks in advance!
Regards,
Ralf

On 05/30/2011 05:13 AM, [email protected] wrote:

I am thinking of Gnuradio on USRP with LFRX/TX as a kind of generic
development platform for transmitter and receiver.

We are experienced in linux and python and others but we haven’t
digged very much into GNU Radio yet.

Can we do simple modulations like FSK, ASK and OOK easily?
I expect we will get a simple spectrum analyzer capability with the
USRP receiver, right?

Yes on all of those.

I am not sure I fully understand what is implemented on LFRX/TC from
Ettus R.? Only ADC and DAC or also ome amplifiers and LP filter?
Where can we find specifications?

The LFRX and LFTX are basically just differential amplifiers and
connectors. They have a lowpass filter which allows them to be used up
to about 30 MHz. The ADC and DAC are on the motherboards.

Matt

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