George,
You laptop may have only a mono input for the mic/line-in, but for
digital modes, only one channel is used, so it should work - just be
sure to turn off sounds from your OS so those are not transmitted on the
air.
A simple and inexpensive USB soundcard can eliminate the problem of
sounds from the OS. Just make certain the USB soundcard is *not* the
default sound device.
For digital modes, you do not need an expensive interface. Yes, some
provide ready made cables to connect with your radio, some have galvanic
isolation on the audio lines, and some provide PTT to the transceiver,
but VOX works just great with the KX3 for digital modes (you don't need
PTT).
The big difference between soundcards (including those built into
interface boxes) for digital modes is the noise floor of the soundcard.
You mentioned Signalink, and while popular, it is not the best interface
available.
Try your laptop internal soundcard before buying anything else, it may
be all you need.
73,
Don W3FPR
On 4/10/2016 2:09 PM, George_yv5wz wrote:
Thank you Don!
So you mean I don't need to buy anything just my laptop....that's
interesting!
however, I'm kind of confuse....why so many brands of expensive interface
sound card....does it represent any better signal or any using interface
?....I mean 100 Box (signlink) against simple USB soundcard (12 box)
.....does it really matter?
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