Re: Second Step?
SoftRock SRD (Software Defined Radios) use quadrature sampling detector. This produces the (signal I, 0-180) and the 90-270 degree shifted signal (quadrature Q) thus "IQ". With the two signals I & Q all of the demodulation can be done via DSP using the PC. So IQ SRDs have a stereo in and out for RX/TX. http://www.wb5rvz.com/ is a good link to start from.
73 John TI4/N0URE
--- In email@example.com, Ed <autek@...> wrote:
> On Sun, 01 Jan 2012 01:57:34 -0000
> "John" <n0ure@...> wrote:
> > Ed, you know something I didn't see were any options for IQ input in
> > the audio section?
> > john
> What is this ? I've never ran across the term before.
- I think that the si570 hamlib support will not need the device filled in. You probably need to add the softrock.rules as Sid described in one of his notes on the softrock list.
On 1/2/2012 5:03 PM, Ed wrote:
On Mon, 02 Jan 2012 22:45:07 -0000
"John" <n0ure@...> wrote:
> I am making progress, slowly.
> I found the source of must of my Update & Upgrade problems. The local
> ISP DNS server is slow. I set to 184.108.40.206 and upgraded to 11.04. I did
> have some problems at the start, just a gray screen with no action. I
> had to go get an unsupported driver for Unity/Nvidia.
> I got the pavucontrol installed and jumped over to Fldigi config.
> Hamlib devices now show TTYS0-31 but no USB. The lsusb command
> john@clarkHam01:~$ lsusb
> Bus 007 Device 003: ID 16c0:05dc VOTI shared ID for use with libusb
> Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 006 Device 002: ID 051d:0002 American Power Conversion
> Uninterruptible Power Supply Bus 006 Device 001: ID 1d6b:0001 Linux
> Foundation 1.1 root hub Bus 005 Device 002: ID 046d:c51b Logitech,
> Inc. V220 Cordless Optical Mouse for Notebooks Bus 005 Device 001: ID
> 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 002: ID
> 058f:9360 Alcor Micro Corp. 8-in-1 Media Card Reader Bus 004 Device
> 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001:
> ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 001: ID
> 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 001: ID
> 1d6b:0002 Linux Foundation 2.0 root hub john@clarkHam01:~$
Well you are doing good so far.
Well Linux found the USB hub, But why didn't fldigi find it.
The /dev/ttyUSB0) should be the last thing after the serial ports. Only
thing that I can think of is one of the device's you have plugged in is
keeping fldigi from seeing the ports.
If you run fldigi from a terminal are you seeing any errors ?
Open Synaptic and remove brltty.
-- John Williams KE5SSH - ham since 2007 WQKA523 - GMRS for family use on the farm