I gave myself a toy, one of those cheap USB Software Define Radios, and
would like to use it on my C7 box. Having wasted some time on it, I gave
up and installed Ubuntu on a USB HD so I can boot that to play with SDR.
The Ubuntu GQRX installation is well documented and went off without a hitch.
but I just hate having to boot something else on my main box (partly because
it also runs a mailserver for my personal domain, partly because, well,
I just want my box running CentOS, not Ubuntu.)
Searching through SDR info on line I see someone has documented installing
all the bits for C6, but I suspect the process is different for C7.
BTW, I installed the various bits I could find from, er, I think some
came from li.nux.ro, some perhaps from epel, on C7, but couldn't get
them to properly function.
Worse, when the USB radio is unplugged from the system, it locks up hard.
then a few days ago, I had been playing with it using the UBUNTU install,
did a reboot and for kicks fired up the GQRX on Centos, and lo and behold
it worked! I tried running it on Centos yesterday and it reverted to type,
i.e., lock up hard. I suspect that Ubuntu is leaving some hardware in a
state that allows it to work on a subsequent Centos boot (without poweroff),
but no clue what.
So, if anyone can point me to how to use it on C7, I'd greatly appreciate
it.
thanks in advance!
Fred
--
---- Fred Smith -- fredex at fcshome.stoneham.ma.us
-----------------------------
Show me your ways, O LORD, teach me your paths;
Guide me in your truth and teach me,
for you are God my Savior,
And my hope is in you all day long.
-------------------------- Psalm 25:4-5 (NIV) --------------------------------
Is it a Realtek chipset? I've had problems with it on CentOS as the system will load up the DVB drivers (for TV tuner) thus interfering with the SDR. What worked for me is blacklisting them & reboot. Give it a try. cat /etc/modprobe.d/blacklist_rtl.conf blacklist dvb_usb_rtl28xxu blacklist rtl2832 blacklist rtl2830 BTW there's a new package at http://li.nux.ro/download/nux/tmp/gqrx7/ if you care to test and confirm success so I can move it to the main repo. -- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro ----- Original Message -----> From: "Fred Smith" <fredex at fcshome.stoneham.ma.us> > To: "CentOS mailing list" <centos at centos.org> > Sent: Thursday, 1 February, 2018 22:38:09 > Subject: [CentOS] Anyone using GQRX in Centos-7, for SDR ?> I gave myself a toy, one of those cheap USB Software Define Radios, and > would like to use it on my C7 box. Having wasted some time on it, I gave > up and installed Ubuntu on a USB HD so I can boot that to play with SDR. > The Ubuntu GQRX installation is well documented and went off without a hitch. > but I just hate having to boot something else on my main box (partly because > it also runs a mailserver for my personal domain, partly because, well, > I just want my box running CentOS, not Ubuntu.) > > Searching through SDR info on line I see someone has documented installing > all the bits for C6, but I suspect the process is different for C7. > > BTW, I installed the various bits I could find from, er, I think some > came from li.nux.ro, some perhaps from epel, on C7, but couldn't get > them to properly function. > > Worse, when the USB radio is unplugged from the system, it locks up hard. > > then a few days ago, I had been playing with it using the UBUNTU install, > did a reboot and for kicks fired up the GQRX on Centos, and lo and behold > it worked! I tried running it on Centos yesterday and it reverted to type, > i.e., lock up hard. I suspect that Ubuntu is leaving some hardware in a > state that allows it to work on a subsequent Centos boot (without poweroff), > but no clue what. > > So, if anyone can point me to how to use it on C7, I'd greatly appreciate it. > > thanks in advance! > > Fred > -- > ---- Fred Smith -- fredex at fcshome.stoneham.ma.us ----------------------------- > Show me your ways, O LORD, teach me your paths; > Guide me in your truth and teach me, > for you are God my Savior, > And my hope is in you all day long. > -------------------------- Psalm 25:4-5 (NIV) -------------------------------- > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos
On Fri, Feb 02, 2018 at 09:38:17AM +0000, Nux! wrote:> Is it a Realtek chipset?yes it is.> I've had problems with it on CentOS as the system will load up the DVB drivers (for TV tuner) thus interfering with the SDR. > What worked for me is blacklisting them & reboot. Give it a try.Ah, thanks, that's the trick. works now.> > cat /etc/modprobe.d/blacklist_rtl.conf > blacklist dvb_usb_rtl28xxu > blacklist rtl2832 > blacklist rtl2830 > > BTW there's a new package at http://li.nux.ro/download/nux/tmp/gqrx7/ if you care to test and confirm success so I can move it to the main repo.I've installed it and it seems to be working fine (based on about 20 minutes of use, and note that I"m not an expert yet). thanks!> Nux! > www.nux.ro > > ----- Original Message ----- > > From: "Fred Smith" <fredex at fcshome.stoneham.ma.us> > > To: "CentOS mailing list" <centos at centos.org> > > Sent: Thursday, 1 February, 2018 22:38:09 > > Subject: [CentOS] Anyone using GQRX in Centos-7, for SDR ? > > > I gave myself a toy, one of those cheap USB Software Define Radios, and > > would like to use it on my C7 box. Having wasted some time on it, I gave > > up and installed Ubuntu on a USB HD so I can boot that to play with SDR. > > The Ubuntu GQRX installation is well documented and went off without a hitch. > > but I just hate having to boot something else on my main box (partly because > > it also runs a mailserver for my personal domain, partly because, well, > > I just want my box running CentOS, not Ubuntu.) > > > > Searching through SDR info on line I see someone has documented installing > > all the bits for C6, but I suspect the process is different for C7. > > > > BTW, I installed the various bits I could find from, er, I think some > > came from li.nux.ro, some perhaps from epel, on C7, but couldn't get > > them to properly function. > > > > Worse, when the USB radio is unplugged from the system, it locks up hard. > > > > then a few days ago, I had been playing with it using the UBUNTU install, > > did a reboot and for kicks fired up the GQRX on Centos, and lo and behold > > it worked! I tried running it on Centos yesterday and it reverted to type, > > i.e., lock up hard. I suspect that Ubuntu is leaving some hardware in a > > state that allows it to work on a subsequent Centos boot (without poweroff), > > but no clue what. > > > > So, if anyone can point me to how to use it on C7, I'd greatly appreciate it. > > > > thanks in advance! > > > > Fred > > ---- ---- Fred Smith -- fredex at fcshome.stoneham.ma.us ----------------------------- I can do all things through Christ who strengthens me. ------------------------------ Philippians 4:13 -------------------------------