Re: [Discuss-gnuradio] ICOM 706 MKIIG as input to GNURadio
On 12/31/2010 02:24 PM, Brad Hein wrote: I'm looking for a way to tap into the unmodulated signal in my ICOM 706 MKIIG (I don't have a SDR BUT I do have a sound card, and lots of ham equipment :) ). Referring to the product service manual[1], I have found the "product detector" signal before it reaches the AF stages. Also it appears (hoping I'm wrong) that the second IF runs at about 9Mhz. So does that mean that I need to down-convert the signal from 9Mhz, to something the soundcard can handle? Or is there a better place to tap the IQ signal coming from the VDO...? Anybody else had any success in tapping the IQ in a receiver and feeding that into GNURadio? 73 K1GTO BH Pulling off a signal from the 2nd IF would likely be doable. But you'll need to convert it to quadrature baseband somehow. Most "traditional" receivers *do not* have a quadrature architecture. You might look into getting something like a "SoftRock 40" and modifying it to produce a quadrature conversion to baseband from 9MHz, instead of the nominal 7.1MHz that the "Softrock 40" is designed for. I think the "SoftRock" series uses a Tayloe detector, whose crystal clock runs at 4X the nominal conversion frequency. If you can identify the point in the receiver where the 9MHz IF is at roughly 50Ohms impedance, it should be quite straightforward. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USRP N210 10MHz reference input
Thanks Josh - knowing what to look for helped - as does my using the right file =) Just confirmed operation by gently phase modulating my reference clock from a signal generator with a CW RF input - the sample phases follow as they should. R. Josh Blum-3 wrote: > > >> The problem is this: the 'Ref Clock' switch in the 'UHD Single USRP >> Source' >> doesn't appear to function. Switching it to External does seem to do >> anything. The GRC code is the same no matter whether I set the ref clock >> to >> int or ext (I checked the python code with diff). >> > > Works for me, here is my diff when i switch the ref to External and > click generate: > >> io_type=uhd.io_type_t.COMPLEX_FLOAT32, >> num_channels=1, >> ) >> +_clk_cfg = uhd.clock_config_t() >> +_clk_cfg.ref_source = uhd.clock_config_t.REF_SMA >> +_clk_cfg.pps_source = uhd.clock_config_t.PPS_SMA >> +_clk_cfg.pps_polarity = uhd.clock_config_t.PPS_POS >> +self.uhd_single_usrp_source_0.set_clock_config(_clk_cfg); >> self.uhd_single_usrp_source_0.set_samp_rate(samp_rate) >> self.uhd_single_usrp_source_0.set_center_freq(rx_freq, 0) >> self.uhd_single_usrp_source_0.set_gain(0, 0) > > -Josh > > ___ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > -- View this message in context: http://old.nabble.com/USRP-N210-10MHz-reference-input-tp30564787p30564992.html Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] ICOM 706 MKIIG as input to GNURadio
I'm looking for a way to tap into the unmodulated signal in my ICOM 706 MKIIG (I don't have a SDR BUT I do have a sound card, and lots of ham equipment :) ). Referring to the product service manual[1], I have found the "product detector" signal before it reaches the AF stages. Also it appears (hoping I'm wrong) that the second IF runs at about 9Mhz. So does that mean that I need to down-convert the signal from 9Mhz, to something the soundcard can handle? Or is there a better place to tap the IQ signal coming from the VDO...? Anybody else had any success in tapping the IQ in a receiver and feeding that into GNURadio? 73 K1GTO BH References [1] http://www.rigpix.com/icom/ic706mkiig.htm ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] gnuradio on virtual linux?
Hi Ali, I managed to get a N210 running on a virtual Ubuntu 10.04 on a Windows 7 laptop with VirtualBox. The N210 was connected via a bridged connection to the GbE port. Can't comment on the merits of various VMs but can confirm that it is workable - at least for for sample rates <2Mbps. R. alirazib wrote: > > Hi all, > > I have managed to install gnuradio 3.3.0 on my Windows machine with > Cygwin, although some of the components like gr-usrp2, usrp2, grc, wxgui > etc. could not be installed. Then I needed to install drivers for USRP2. > The apparent complexity involved in installing UHD drivers on Windows is > actually making me rethink. I am thinking of installing a virtual linux > environment (like, Portable Ubuntu, Microsoft Virtual PC or VMWire) on my > Windows OS and then trying out the gnuradio and USRP2 packages designed > for Ubuntu. Could anyone suggest me if that would be a good idea? If so, > then which virtual machine should I choose? > > Thanks, > Ali > > -- View this message in context: http://old.nabble.com/gnuradio-on-virtual-linux--tp30525694p30564932.html Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USRP N210 10MHz reference input
> The problem is this: the 'Ref Clock' switch in the 'UHD Single USRP Source' > doesn't appear to function. Switching it to External does seem to do > anything. The GRC code is the same no matter whether I set the ref clock to > int or ext (I checked the python code with diff). > Works for me, here is my diff when i switch the ref to External and click generate: > io_type=uhd.io_type_t.COMPLEX_FLOAT32, > num_channels=1, > ) > + _clk_cfg = uhd.clock_config_t() > + _clk_cfg.ref_source = uhd.clock_config_t.REF_SMA > + _clk_cfg.pps_source = uhd.clock_config_t.PPS_SMA > + _clk_cfg.pps_polarity = uhd.clock_config_t.PPS_POS > + self.uhd_single_usrp_source_0.set_clock_config(_clk_cfg); > self.uhd_single_usrp_source_0.set_samp_rate(samp_rate) > self.uhd_single_usrp_source_0.set_center_freq(rx_freq, 0) > self.uhd_single_usrp_source_0.set_gain(0, 0) -Josh ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] USRP N210 10MHz reference input
Greetings, first post so please be gentle.. I have managed to build the UHD driver and gnuradio (v3.3.1git-380-ged78ba5d) etc under Ubuntu 10.04. Running from the gnuradio-companion it all works exactly as expected ie I can demodulate broadcast FM OK and device streams reliably up to sample rates of 20Msps fine. I'm trying to get my shiny N210 to accept a 10MHz reference and 1PPS (from a Trimble Mini-Thunderbolt GPSDO). The problem is this: the 'Ref Clock' switch in the 'UHD Single USRP Source' doesn't appear to function. Switching it to External does seem to do anything. The GRC code is the same no matter whether I set the ref clock to int or ext (I checked the python code with diff). The 1PPS input seems to be working OK - tested 'test_pps_input' from UHD - passes with GPS connected and fails when I remove the 1PPS. The 10MHz input is the right level ~10dBm. I'm guessing this is a software problem and not a hardware one (this is a software radio right? :) ) Anyone got any ideas? Thanks in advance, Rob. -- View this message in context: http://old.nabble.com/USRP-N210-10MHz-reference-input-tp30564787p30564787.html Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Gnuradio website
On Fri, Dec 31, 2010 at 8:28 AM, Philip Balister wrote: > gnuradio.org is down, can someone kick it ... > > Philip It has been kicked. Tom ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Gnuradio website
gnuradio.org is down, can someone kick it ... Philip ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] SSB/AM driver amp for LFTX / BasicTX ?
Hi, I am a ham, and software engineer, not a lot of electronics experience. Can anybody recommend a commercial product, or simple circuit , or further information for taking whatever LFTX (using USRP) puts out (1mw I guess ?) to at least 1W level (to later be fed into a linear amp like Tokyo Hy Power HL45B for SSB operating). Thank you, Adi ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] cannot detect USRP2 on ubuntu 9.10 whatsoever...various solutions adopted...
On 12/31/2010 01:34 AM, Nick Foster wrote: Verify that the ethernet card (and cable) work with another device such as a network switch. The USRP2 should work with any gigabit Ethernet card supported in Linux. --n On Thu, 2010-12-30 at 20:23 +0800, yyl wrote: On 12/22/2010 02:10 AM, Nick Foster wrote: If the ethtool output you provided is with the USRP2 plugged in and turned on, then your ethernet card isn't detecting a link. If another computer works fine with that same USRP2, I suspect the ethernet cable or your ethernet card as the culprit. You might also try: sudo ifconfig eth0 up and see if that affects the result of your ethtool output. --n On Tue, 2010-12-21 at 11:34 +0800, yulong yang wrote: Hi all, I am new to gnuradio and stuck with the usrp2 connection for several days... I looked up tens of search results but no solution yet. Therefore I post my problem and hope someone could give me a hand: I am running gnu radio 3.2.2 on ubuntu9.10, and I think gnuradio works fine because dial_tone.py and grc all could be launched correctly. However, when I plug in USRP2, problems happen: if I typed in "sudo find_usrps" it says: No USRP2 found. if I typed "sudo find_usrps -e eth0" it also says No USRP2 found. (eth0 is what I get when typing in ifconfig) if I typed in "sudo usrp2_fft.py" t says: Traceback (most recent call last): File "/usr/local/bin/usrp2_fft.py", line 273, in main () File "/usr/local/bin/usrp2_fft.py", line 269, in main app = stdgui2.stdapp(app_top_block, "USRP2 FFT", nstatus=1) File "/usr/local/lib/python2.6/dist-packages/gnuradio/wxgui/stdgui2.py", line 36, in __init__ wx.App.__init__ (self, redirect=False) File "/usr/lib/python2.6/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py", line 7978, in __init__ self._BootstrapApp() File "/usr/lib/python2.6/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py", line 7552, in _BootstrapApp return _core_.PyApp__BootstrapApp(*args, **kwargs) File "/usr/local/lib/python2.6/dist-packages/gnuradio/wxgui/stdgui2.py", line 39, in OnInit frame = stdframe (self.top_block_maker, self.title, self._nstatus) File "/usr/local/lib/python2.6/dist-packages/gnuradio/wxgui/stdgui2.py", line 60, in __init__ self.panel = stdpanel (self, self, top_block_maker) File "/usr/local/lib/python2.6/dist-packages/gnuradio/wxgui/stdgui2.py", line 81, in __init__ self.top_block = top_block_maker (frame, self, vbox, sys.argv) File "/usr/local/bin/usrp2_fft.py", line 70, in __init__ self.u = usrp2.source_32fc(options.interface, options.mac_addr) File "/usr/local/lib/python2.6/dist-packages/gnuradio/usrp2.py", line 644, in source_32fc return _usrp2.source_32fc(*args, **kwargs) RuntimeError: No USRPs found on interface eth0 What exactly the problem is? TO note: 1. python is fine. I ran following process and it did not say error: Python 2.6.4 (r264:75706, Dec 7 2009, 18:45:15) [GCC 4.4.1] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> from gnuradio import gr >>> from gnuradio import usrp >>> from gnuradio import audio >>> from gnuradio import usrp2 >>> exit() 2. could it be the firmware in usrp2? I saw some threads discussing firmware in SD card. But it seems to run process like usrp2_fft.py dose not need any firmware. 3. my usrp2 runs fine. I checked it with another computer which could launch usrp_fft.py correctly. Also, when I power on usrp2, all 6 lights flah and then D and F remain on. 4. my ethernet card should be fine. it is gigabit. here is what it says when I type in "sudo ethtool eth0": Settings for eth0: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Advertised auto-negotiation: Yes Speed: Unknown! Duplex: Unknown! (255) Port: Twisted Pair PHYAD: 1 Transceiver: internal Auto-negotiation: on Supports Wake-on: pumbag Wake-on: g Current message level: 0x0001 (1) Link detected: no I am really confused and find no solution on my own. Any suggestion would be greatly appreciated. I will wait online and provide any additional information if you need. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio sorry for the late response, I have been working on ubuntu for several days. Thank you for your reply. I just tried this command and nothing happened, I got the same result as previous. Could the ethernet card be too new for usrp2 to recognize? I am confused because I have done every
