[hpsdr] Pre-Distortion

[Mike Seguin]

And my last post on this, NM3E has a pretty decent stock and prices for 
most things Bird and Dielectric.

Scroll down here. He has a few Dielectric samplers.

http://www.nm3e.com/AttenuatorSampler.htm#Sampler

Mike

On 12/9/2013 7:01 AM, Mike Seguin wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> 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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