The K4 has a built in USB sound/RS232 connection. No external hardware
needed.
In addition, unlike the K3, the audio response on DATA transmit from the K4
is flat, so no matter what audio frequency (within reason) you select, the
TX output will be the same. The K3 had a fairly "lumpy" response
If you have a general-interest topic in mind for our occasional newsletter,
please email me directly. Articles are typically 1/2 page to 2 pages, with one
or two illustrations if applicable.
73,
Wayne
N6KR
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