[Elecraft] Suggestions for good 192kHz external sound card fordigital modes

[David Orman]

I am using it for wide-frequency viewing, which is why I made my request as
such re: 192kHz. I definitely want a 24bit card for the reasons you
mentions. You also have mentioned the noise floor - this is very important
to me. I'm often operating in non-optimal conditions, so every little bit
helps.

I posted requesting feedback on 192kHz sound cards (I should have specified
24-bit or better) specifically for a reason. You've basically hit the
hammer on the head for the reasons. :)

As to the falloff, can you point me to a thread so I can understand it? If
it's something the PX3 (which I also own) compensates for, I can probably
write code to do the same in my favorite applications.

I very much appreciate the input,
David

On Tue, Nov 11, 2014 at 8:08 PM, Don Wilhelm <w3fpr at embarqmail.com> wrote:

> David,
>
> A regular 16 bit soundcard will do well when being used for digital
> modes.  Yes, the better soundcards have a lower noise floor which can help,
> but great bandwidth and bit rates are not required for those applications.
> OTOH, if you are looking at panadapter applications, a good soundcard is
> important to get 192 kHz span width with low noise, and you sill want to
> use it at the higher bit rates unless you are satisfied with a 96 kHz span.
>
> Select your needs and then select the soundcard that will fulfill those
> needs.  Even the lowly 16 bit cards are adequate for data mode applications.
>
> 73,
> Don W3FPR
>
> On 11/11/2014 8:51 PM, dmoes at nexicom.net 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.
>>
>>
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