[Elecraft] Does a K4 need an external sound card for FT8?

[Bill Frantz]

In an ideal world, we would not have any analog audio in use for 
digital modes. Analog RF to the ADC in the front end of the 
radio. Digital through the "radio" to the digital path to the 
computer to the digital processing for digital modes.

The K3S actually goes through a DtoA conversion and then a AtoD 
again within the radio. Does the K4 also do this?

For audio, of course, somewhere we need to do DtoA conversion.

73 Bill AE6JV

On 1/4/21 at 8:36 PM, n6kr at elecraft.com (Wayne Burdick) wrote:

>The sound card is built into the K4 (stereo line out for RX, 
>line in for TX). Adjustment is simple. There is no advantage 
>whatsoever to using an external sound card.
>
>The K4 also has analog line in/out for backwards compatibility, 
>and supports digital audio streaming over Ethernet as well.

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