Re: [Discuss-gnuradio] choosing hardware for demos, ham purposes

2017-05-18 Thread q...@kd4e.com
Has anyone actually used a LimeSDR for Ham RX/Tx yet? I held-off buying one early due to the absence of even a bread-boarded proof-of-concept Ham RxTx, or even a VFO or single conversion Rx. Thanks - DavidC KD4E The only thing I know of that covers 3.5 MHz up to 2.4 GHz, full duplex, for a

Re: [Discuss-gnuradio] Kernel Ubuntu - USB 3.0 trouble - missed packets

2017-05-18 Thread Marcus D. Leech
On 05/18/2017 06:00 PM, Marcus Müller wrote: Hi Cristian, hm, the Intel 8 series tends to work well. What is it that you're doing with these samples in GNU Radio? Just UHD Source -> Null Sink, right? Gut feeling: your computer might have adaptive power saving, so that your CPU is scaled

Re: [Discuss-gnuradio] Kernel Ubuntu - USB 3.0 trouble - missed packets

2017-05-18 Thread Marcus Müller
Hi Cristian, hm, the Intel 8 series tends to work well. What is it that you're doing with these samples in GNU Radio? Just UHD Source -> Null Sink, right? Gut feeling: your computer might have adaptive power saving, so that your CPU is scaled down sporadically, and then has a hard time

Re: [Discuss-gnuradio] Kernel Ubuntu - USB 3.0 trouble - missed packets

2017-05-18 Thread Cristian Rodríguez
> > On 16/05/17 06:49, Neel Pandeya wrote: > > Hello Cristian: > > If you use Ubuntu 16.04.2, the kernel is 4.8, which should be fine. > > First at all, thank you very much for answering. My kernel version is: 4.8.0-49-generic Ubuntu Release:16.04.2 LTS > The specific USB controller is also

[Discuss-gnuradio] choosing hardware for demos, ham purposes

2017-05-18 Thread Raj Bhattacharjea
Daniel, Philip Ballister got in touch with me and thought some of the following material might help you out: https://www.researchgate.net/publication/304346578_Open-Source_SDR_on_Embedded_Platforms Now to address some of your specific requests: The only thing I know of that covers 3.5 MHz up

[Discuss-gnuradio] Project Call Pushed to Next Week

2017-05-18 Thread Ben Hilburn
Hi all - Today's project call is pushed to next week due to the busy schedules of our coredevs today. We'll have the call at the same time (2 PM EDT) next week, Thursday 25 May. Cheers, Ben ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org

Re: [Discuss-gnuradio] IEEE802.11 transceiver - problems sending data

2017-05-18 Thread Bastian Bloessl
Hi, this is a rather complex setup. I would not immediately run SSH, but start with a simple ping (test GNU Radio and the WiFi card as senders). Try to see what works and what goes wrong, for example, ARP (in both directions) or routing. IIRC, the script just sets up ARP in one direction (from

Re: [Discuss-gnuradio] PSK/QAM Demodulation Issue

2017-05-18 Thread Marcus Müller
Hi Mansour, > Besides as far as I know form GNURadio documentation, samples/symbol > is referring to the samples representing a single constellation symbol > so increasing this parameter is equivalent to interpolating the > signal. It doesn't have to do anything with the modulation scheme. >

Re: [Discuss-gnuradio] PSK/QAM Demodulation Issue

2017-05-18 Thread Mojtaba Mansour Abadi
Thanks a lot Cinaed for the tips, in particular, the symmetry order and CMA equaliser. I did what you suggested about sps variable. However, it didn't help. Besides as far as I know form GNURadio documentation, samples/symbol is referring to the samples representing a single constellation symbol

Re: [Discuss-gnuradio] how to get the signal strength in gr-ieee802-11

2017-05-18 Thread Marcus Müller
Hi Siyu, what does "signal strength" mean to you? If you mean the "62%" or whatever network card drivers display, these values are, as far as I can tell, a combination of bit error rates, detected collisions and missed packets, as well as occult rituals and random numbers. They basically mean