[Elecraft] External sound card advice needed to attach to K3

[Bill Frantz]

I have been quite successful with a $5 dongle from Amazon which 
I use with my KX3. I had to install a attenuator which is a 1K 
ohm resistor between the mic in and ground and a 47K ohm 
resistor between KX3 headphone out and mic in. (Note that these 
values aren's critical. Fred Cady recommends 33 ohm and 270 ohm 
respectively.) Since everything fits in the shell of the 3.5mm 
plug, it makes a very light, compact system which is nice with a 
portable radio.

73 Bill AE6JV

On 1/1/21 at 11:38 AM, lists at subich.com (Joe Subich, W4TV) wrote:

>Any sound card with Line In and Line Out will work with the K3.  I would
>avoid the $5 USB dongles that are designed to work with a headset (mic
>and earphones).

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