Thanks for the input guys. I wanted to see if this was possible. Oh well.
I'll go look at the Softrock again. 73 DE AB3LS On Wed, May 9, 2012 at 2:03 AM, Joe Subich, W4TV <[email protected]> wrote: > > Geoff, > > > > I suppose the thing I'm trying to get at is a direct I/Q line from the > > K3... Whether a software update is possible to add this to the current > > Stereo Line-Out jack (on the back of the K3) or not. > > At present, there simply *is no hardware* capable of providing a direct > I/Q output to the stereo line out jack. Line Out audio is "0 Hz based" > following the main/sub RX. I doubt the K3 has enough processing power > to do a separate 15 KHz to 6 KHz I/Q conversion and even if it did the > output bandwidth would be severely limited by the 1st IF ("roofing") > filters. > > The P3 certainly has no provision for separate I/Q audio output. Other > than the display. the entire P3 electronics would need to be duplicated > to generate an I/Q output otherwise the audio (if it could be extracted > from the P3 and there is no DAC to do so)would be limited to the span > and resolution of the P3 display. > > As Tony has suggested, the proper way to get wideband I/Q audio from > the K3 is by use of a SoftRock with Clifton Labs isolation amplifier > or an LP-Pan connected to the K3's wideband IF output. Other solutions > would essentially be reinventing the Softrock or LP-Pan and any USB > based solution would likely be limited to a 48 KHz sample rate if it > used one of the commercial USB sound chips. > > 73, > > ... Joe, W4TV > > > > On 5/9/2012 12:03 AM, Geoff Wolf AB3LS wrote: > >> Tony, >> >> Yes I am aware of Softrock and LP-Pan, as well as a whole slew of other >> SDRs you could use with the K3's Buffered IF Output. >> >> I suppose the thing I'm trying to get at is a direct I/Q line from the >> K3... Whether a software update is possible to add this to the current >> Stereo Line-Out jack (on the back of the K3) or not. >> >> 73 >> DE AB3LS >> >> On Tue, May 8, 2012 at 11:31 PM, Tony Estep<[email protected]> wrote: >> >> On Tue, May 8, 2012 at 10:14 PM, Geoff Wolf AB3LS >>> <[email protected]>**wrote: >>> >>> ....way to get I/Q data to a computer from ...an extra module....? >>>> ============= >>>> >>> >>> Well Geoff, one way is to use a Softrock-IF (a kit, available from KB9YIG >>> for less than 30 bucks); another way is to use an LP-Pan (available from >>> http://www.telepostinc.com/LP-**PAN.html<http://www.telepostinc.com/LP-PAN.html>). >>> The LP-Pan costs way more but >>> has >>> better dynamic range and other fancy features; nonetheless the little >>> Softrock is a dynamite piece of engineering and does a great job. >>> >>> In either case you will get much better results by adding an outboard >>> sound >>> card instead of your computer's on-board card. I use an EMU0202, no >>> longer >>> made, but others are good too. You take IF out of the back of the K3 and >>> feed the Softrock or LP-Pan, and get I-Q out. >>> >>> Tony KT0NY >>> >>> >>> >>> >>> -- >>> http://www.isb.edu/faculty/**facultydir.aspx?ddlFaculty=352<http://www.isb.edu/faculty/facultydir.aspx?ddlFaculty=352> >>> ______________________________**______________________________**__ >>> Elecraft mailing list >>> Home: >>> http://mailman.qth.net/**mailman/listinfo/elecraft<http://mailman.qth.net/mailman/listinfo/elecraft> >>> Help: http://mailman.qth.net/mmfaq.**htm<http://mailman.qth.net/mmfaq.htm> >>> Post: mailto:[email protected].**net <[email protected]> >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> >>> ______________________________**______________________________**__ >> Elecraft mailing list >> Home: >> http://mailman.qth.net/**mailman/listinfo/elecraft<http://mailman.qth.net/mailman/listinfo/elecraft> >> Help: http://mailman.qth.net/mmfaq.**htm<http://mailman.qth.net/mmfaq.htm> >> Post: mailto:[email protected].**net <[email protected]> >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> >> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
