[hpsdr] Pre-Distortion

[Clyde Washburn]

There are sniffer plugs for the Bird 43 with a sampled BNC output -- I have used them many times over the years for IM testing of
commercial SSB transmitters.
Clyde, K2UE

-----Original Message-----
From: hpsdr-bounces at lists.openhpsdr.org [mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of Chris Wilson
Sent: Monday, December 09, 2013 6:02 AM
To: hpsdr at lists.openhpsdr.org
Subject: Re: [hpsdr] Pre-Distortion

***** High Performance Software Defined Radio Discussion List *****



> ***** 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.


~~~~~~~~~~~~~

-- 
       Best Regards,
                   Chris Wilson.

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