[Discuss-gnuradio] Does this battery work for usrp/usrp2

2009-04-16 Thread Xiaolong Li
Hi all, Several days ago, I posted a question about using rechargeable batteries instead of AC adapter for usrp/usrp2. I found a SLA battery (6V 10AH capacity) might work for our purpose. However, I am not sure if it will damage the usrp and daughter boards as no working currency is specified

[Discuss-gnuradio] rechargeable battery (set) for usrp/usrp2 ?

2009-04-10 Thread Xiaolong Li
Hi all, Any recommendation for a rechargeable battery (set) that can be used instead of the power adapter for USRP and USRP2 radios? We would like to perform some mobility experiments with the radios attached to laptop hosts and are in need of moving the units from power outlets. Thanks. Bes

[Discuss-gnuradio] xcvr2450 problems

2009-04-10 Thread Xiaolong Li
Hi all, I tried to run tunnel.py with usrp+xcvr2450. However, there were problems with the mode switching between tx and rx. The gnuradio trunk version is Rev. 10798. Specifically, I have two usrps and some xcvr2450 and 2400 daughter boards. First, I ran tunnel.py with two 2400 dbs, everythi

[Discuss-gnuradio] any alternative API for set_auto_tr when using xcvr2450+usrp2

2009-02-26 Thread Xiaolong Li
Hello all, Can I still call set_auto_tr to enable auto switch Rx and Tx with xcvr2450+usrp2? It seems like the set_auto_tr is no longer available. Is there any alternative API for same function? Without calling set_auto_tr, USRP2+xcvr2450 can receive normally, however, no luck for transmission.

[Discuss-gnuradio] cannot transmit (USRP2+xcvr2450)

2009-02-24 Thread Xiaolong Li
Hello all, I am using a USRP2+xcvr2450 with the latest trunk of GNU Radio (just compiled/update the firmware and updated FPGA code to the latest release), and FC 10 as the OS. I tried to use TCP/IP statck over USRP2 with modified tunnel.py, transmit_path.py and receive_path.py. I used one USRP