[Elecraft] KX3 PSK help needed

[Don Wilhelm]

Lynn,

Not only keeping the system sounds from going out on the air, BUT ---
If you are using a laptop, the internal sound card typically has only a 
Mic level input (no line-in).
With a mic level input, the KX3 (or K3) will overdrive the mic input 
unless you provide an attenuator in the line.
Similarly, the soundcard line out is too large a level for the mic input 
of the KX3, and you may need an attenuator - that depends on your 
computers line out and the amount of control you have for the output level.

The 3rd reason is that many internal sound cards have a lousy noise 
floor.  An external card will usually beat the internal soundcard when 
the noise floors are compared.

That being said, internal soundcards have improved in the last few 
years, so give it a try (especially if you have a desktop) and see if 
the results are adequate for your needs - you can always add a USB 
soundcard later.

73,
Don W3FPR
On 8/24/2013 8:42 PM, Lynn W. Taylor, WB6UUT wrote:
> Maybe I'm missing something.  My reasoning for a second sound card is 
> keeping the system sounds going out over the air.
>