[Elecraft] k3/psk on laptop

[n4lq]

"I find that with a good external card I just don't need any filtering"

Huh? What about the AGC? Watching the waterfall you can easily see weak 
signals disappear when a strong one comes pops up within your bandpass. This 
is normal and no amount of dynamic range has any bearing on it.
Sharp IF filters are the key to operating digital modes.
Steve Ellington
N4LQ at insightbb.com
----- Original Message ----- 
From: "Simon Brown (HB9DRV)" <simon at hb9drv.ch>
To: <w0yk at msn.com>
Cc: <elecraft at mailman.qth.net>
Sent: Wednesday, June 11, 2008 2:46 PM
Subject: Re: [Elecraft] k3/psk on laptop


> Maybe you had a good card - but I find that with a good external card I 
> just
> don't need any filtering as the high dynamic range of the soundcard + K3 
> (or
> TS-480SAT) makes it unnecessary.
>
> Simon Brown, HB9DRV
>
> --------------------------------------------------
> From: "Ed Muns" <w0yk at msn.com>
>
>>> Limiting factors - well first you should try a side-by-side
>>> comparison of the average internal laptop soundcard and a
>>> high-end solution.
>>
>> I have (US Navigator) and there was no difference.  Maybe the internal
>> sound
>> cards I've used are "good enough" compared to ones you've seen.  Also, my
>> only experience is with the RTTY (200-300 Hz filtering) and a limited
>> amount
>> of PSK31.
>>
>
>
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