[hpsdr] Pre-Distortion

[Mike Seguin]

One thing I forgot to mention, the "sniffer" type slugs are 
non-directional. If you need to sniff just forward or reverse power, 
make sure you get the right type.

On 12/9/2013 6:32 AM, Mike Seguin wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi Chris,
>
> Yes the Bird sniffers output RF. I know Dielectric also makes one that
> is adjustable. Model 87004 'xtractor'
>
> I use a Bird 4275 all the time in my 50 MHz and up amp testing.
>
> http://www.bird-technologies.com/en/Products/Components/Variable-Signal-Samplers/4275-Series_20-1000-MHz-Variable-RF-Signal-Samplers.aspx#.UqWpwuKQNl8
>
>
> Mike
>
> On 12/9/2013 6:01 AM, Chris Wilson wrote:
>> ***** 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.
>>
>>
>> ~~~~~~~~~~~~~
>>
>

-- 

73,
Mike, N1JEZ
"A closed mouth gathers no feet"


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