Re: [Discuss-gnuradio] USRP1 XCV2450 LO - can it be bypassed with the motherboard's LO

2012-06-16 Thread Nick Iliev
XCVR2450 is already locked to the motherboard crystal.  But "bypass it > with the motherboard's > X-TAL source" does not make sense.  The LO is generated by locking to the > motherboard crystal source.  No bypassing is necessary. > > Matt > > On Fri, Jun 8,

[Discuss-gnuradio] USRP1 XCV2450 LO - can it be bypassed with the motherboard's LO

2012-06-08 Thread Nick Iliev
Hello, we have a USRP1 with 2 XCVR2450 daughtercards. Each XCVR2450 has its own LO however , we would like to bypass it with the motherboard's X-TAL source. Both XCVR2450 daughtercards will then be driven synchronously by the motherboard. Is this possible ? If so, is there a schematic of the

[Discuss-gnuradio] Is it possible to have 2 TX x 1 RX MISO in GNU Radio

2012-06-02 Thread Nick Iliev
Hello, we have implemented a 2 TX x 1 RX MISO testbed with GNU Radio 3.4 and USRP1 . Both transmitters are using at 2.4GHz ( actually tx1 uses 2.401GHz and tx2 uses 2.403GHz ) , and are sending data ( BPSK modulated ) at the same time ( in the same time slot ). The summation of both transmission

[Discuss-gnuradio] Looking for 2-TX 2-RX example code for USRP1 and gnuradio 3.2.x.x

2011-02-21 Thread Nick Iliev
Hello, I'm new to GNU Radio but very willing to learn, experiment, and write some python, C++, and Verilog/FPGA code. My system consists of 2 USRP1 boxes, with gnuradio 3.2.x.x installed on two host machines. I've gone thru the basic tutorials and benchmark_rx/tx and it all works. Now I want t