[Elecraft] PX3 with "other" I/Q Receiver?
Tom Blahovici
tomb18 at videotron.ca
Wed Jan 28 13:22:28 EST 2015
Hi Yes but can't you calibrate this out using a signal generator and the px3 calibration facility?
Of course, it appears that the iq correction operates on only a single frequency and does not do frequency based corrections. I could be wrong about this though.
One way to tell is to put a string signal near the left of the display at - 96khz and see if the image is at the extreme left.
Tom
va2fsq.com
On Jan 28, 2015 11:47 AM, "Peter Eijlander (PA0PJE)" <pa0pje at xs4all.nl> wrote:
>
> I did, it works....
>
> With a Softrock-RX for 30 metres. The LO is an xtal on 40.5 MHz that
> produces 10.125 MHz and that shows on the PX3 as 0Hz.
> The real problem comes with the need to recalibrate te I/Q phase and
> amplitude in order to have a good image rejection.
> On -25 kHz I see the DDK9 teleprinter and on +20 kHz I see the average
> bunch of data modes and in between: CW sigs.
> For me it was merely "try and see what happens" for the KX3 obviously
> rocks much better...
>
> 73,
> Peter - PA0PJE
>
> Op 2015-01-27 23:52 schreef Tom Blahovici:
> > Hi
> > It would not work properly as is. I think one would need to send information to the px3 via the serial port to establish the centre frequency, markers, and respond to qsy''s.etc. as well as react to requests coming from the px3.
> > Assuming these are standard api type commands it could be a possibility. Could be a fun project.
> > Tom
> > va2fsq.com
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