[hpsdr] Pre-Distortion

[David R. Wilson]

They make sampling hardware:
http://www.bird-technologies.com/~/media/Bird/Files/PDF/Products/manuals/921-4273_75S.ashx


Yes, Bird makes sampling plugs for the model 43 Wattmeter (and other
line sampling sections).  The data sheet gives the isolation.

A bit more info on a slug for sampling:

http://www.bird-technologies.com/Products/Plug-In-Elements/7-8-inch-Plug-In-Elements/Nondirectional-Sampler-Elements-for-QC-Type-or-7-8-inch-Line.aspx#.UqXXjUPNRRo

Dave
KU4B


On Mon, 2013-12-09 at 11:01 +0000, Chris Wilson wrote:

> 
> > ***** High Performance Software Defined Radio Discussion List *****
> 
> > Hi All,
> 
> > The progress of the pre-distortion software is remarkable. I suppose the
> > general release is coming up soon. You will need an appropriate RF sampler
> > in the feedback loop to use this great functionality. For all and especially
> > for the home-brewers, who will be prepared for this exciting date, I put
> > some info about such a device on http://www.hamsdr.com/dnld.aspx 
> 
> > Season's Greetings.
> 
> > 73, Helmut, DC6NY 
> 
> 
> 
> 
> 09/12/2013 10:58
> 
> I mistakenly sent the following question direct to Helmut, in error,
> and he has replied directly telling me the Bird slugs emit rectified
> output, not straight RF. But I seem to recall seeing "sniffer" slugs
> for Bird Thrulines, and meters. Do these emit bare RF, are are they
> too a rectified output on the sniffer BNC connector? Looking for a
> none invasive way to use what I have. Thanks.
> 
> The question mistakenly sent direct to Helmut was:
> 
> ~~~~~~~~~~~~~
> 
> Congratulations and thank you for your work with this great
> technology.
> 
> A very naive question please? My amp is a single valve (tube) amp, not
> solid state. It has a Bird dual port (forward / reflected with
> separate slugs) Thruline adaptor between output and antenna. Can such
> a device be used to acquire the feedback signal in any way? Thanks
> Helmut, and a very happy Christmas and a healthy and prosperous New
> Year.
> 
> 
> ~~~~~~~~~~~~~
> 



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