[hpsdr] Pre-Distortion

[William H. Fite]

For a few bucks more there is this one, which offers other possibilities,
as well.

http://preciserf.com/shop/station-monitor-trapezoid-qrp/


On Mon, Dec 9, 2013 at 7:06 AM, Mike Seguin <n1jez at burlingtontelecom.net>wrote:

> ***** High Performance Software Defined Radio Discussion List *****
>
> 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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-- 
I can explain it for you, but I can't comprehend it for you.
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