[hpsdr] Still thinking outside the Box

[Lucas Vogel]

This is exciting stuff ...

Personally the idea of having such a versatile piece of equipment makes
this whole exercise hugely more powerful.

Whilst I'm still in the "accumulation of parts" stage, I'm keen to help ...
perhaps I should spend as much latent time as I can getting up to speed on
the software side of things.

Cheers

Luke




On Wed, Jul 18, 2012 at 11:21 AM, Phil Harman <phil at pharman.org> wrote:

> Hi Luke,
>
> My preliminarily investigation into adding a VNA facility to Hermes
> indicates it can be done by just adding code to the FPGA.  No additional
> hardware will be required - apart from an external bridge/directional
> coupler, if other than transmissions measurements are required.
>
> Mercury + Penny is a little more difficult since we have to phase
> synchronise the Tx and Rx signals but I've a few ideas to try in that
> regard.
>
> The bulk of the work will be in the PC code.
>
> 73 Phil...VK6APH
>
>
>
>
>
>
> > ***** High Performance Software Defined Radio Discussion List *****
> >
> > Hi all ...
> >
> >
> >
> > I figure there are two or three major aspect of implementation of a VNA.
> >
> >
> >
> > Firstly, whilst there has been an agreement that it is conceivable with
> > Hermes, I would feel that it is important to have an implementation that
> > used Mercury/Pennylane.  Having said that, I am very new to this SDR
> > project
> > and have absolutely no idea about the viability of same ... from a
> > hardware
> > or software perspective.
> >
> >
> >
> > Has anyone given any thought to exactly what additional hardware (if any)
> > would be needed to implement a VNA in the HPSDR projects as they
> currently
> > stand?  I guess we have the expertise in this group to implement the
> > hardware. (if any)
> >
> >
> >
> > Which brings me to my second point.  Phil has already stated that there
> is
> > some open source VNA software (which I had already found and downloaded J
> > )
> > which should be a good starting point.  It was going to take me some time
> > to
> > get my head around the PowerSDR software in it's own right. Add to that
> > the
> > VNA software (written in Python by the way, not my native language) and I
> > have a steep learning curve and will need time to get up to speed.
> >
> >
> >
> > Are there any programmers note and or other documentation that I can use
> > to
> > help me get up to speed a bit more quickly?
> >
> >
> >
> > --
> >
> > Cheers
> >
> > Luke
> >
> > ---
> >
> > JP(Qual) : VK4KYT
> >
> > ----
> >
> > Work thou not on energised equipment, for if thou doest,
> >
> > thy fellow workers will surely buy beer for thy widow
> >
> > and console her in other ways.
> >
> > ====
> >
> >
> >
> > _______________________________________________
> > HPSDR Discussion List
> > To post msg: hpsdr at openhpsdr.org
> > Subscription help:
> > http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org
> > HPSDR web page: http://openhpsdr.org
> > Archives: http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/attachments/20120718/016976b2/attachment-0003.htm>