Re: Suggestions for good 192kHz external sound cardfordigital modes

[ve3dvy]

 Thanks  that makes sense to me now.   I was thinking K3   not KX3  
it makes sense with the KX3

David Moes
VE3DVY


On Tuesday 11/11/2014 at 9:01 pm, David Orman  wrote:

>
> KX3 == SDR == able to display large chunk of spectrum at a time. A
> 44kHz card significantly limits this. My PX3 does 200kHz well. fldigi
> with some source code edits can too.
>
> Thank you for all of the responses, I'm reading up on every suggestion
> (and site linked).
>
> Thanks!
> David
>
> On Tue, Nov 11, 2014 at 7:51 PM, <[hidden email]> wrote:
>>
>>
>> Im just curious
>>
>> I can see the bit depth making a difference   16 bit will have poor
>> dynamic range compared to 24 or 32 bit  and this is important for some
>> modes like wspr or JTXX,   but is there any advantage to high bit
>> rates in digital modes    even a 44khz card has a bandwidth way beond
>> what any digital mode on HF needs.        or is it that to get a 32bit
>> adapter just by default it will have high bit rates.
>>
>> David Moes
>> VE3DVY
>>
>>
>> On Tuesday 11/11/2014 at 7:08 pm, David Orman  wrote:
>>>
>>> Hi,
>>>
>>> Splitting off from the Signalink thread, since it's actually a
>>> different
>>> question, what are the current external sound cards that people
>>> suggest
>>> (that are supported in Linux if known - if not - that's ok)?
>>>
>>> I see the Tascam mentioned in the PDF in the other thread, so I'm
>>> looking
>>> into those (the ones that support 192kHz now, that is) - are there any
>>> other suggestions to look into? I operate on a lot of digital modes,
>>> but my
>>> Lenovo Thinkpad T400's built in sound card adds a lot of noise to the
>>> signal I'm receiving. I have a Native Instruments Audio Kontrol 1
>>> which
>>> works much better, but it is USB powered (it seemed to be indicated
>>> this
>>> was a no-no for best decoding in digital modes in the other thread).
>>>
>>> There are a lot of options out there now, so it's hard to sift through
>>> them
>>> all, and make a guess as to which are best for HF radio digital
>>> communication, so I thought a thread would be helpful in getting some
>>> ideas
>>> on what is tested/true. If Linux support is unknown, that's ok - I can
>>> do
>>> that research - but it would be great to have a list to start looking
>>> at
>>> that are known good performers with low noise.
>>>
>>> Thanks!
>>> David/K5DJO
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