Barry,
I would disagree with you on your SignaLink recommendation.
The SignaLink is a single channel soundcard, and its sound quality is
"just OK" for digital modes. Yes, there are connecting cables for
several transceivers available from SignaLink that make connection to
the transceiver easy and straightforward - but those are the only
advantages.
There are external soundcards that will do a much better job for a lot
less money. Especially if you are planning to use the RX I/Q outputs on
the KX3 or the outputs of LP-Pan for the K3/K3S for a panadapter
display. A good panadapter display wants to use a soundcard with a
192kHz rating and typically 24 bits.
You must have a stereo soundcard for the panadapter function, and the
SignaLink has only the left channel present.
As for the SignaLink VOX, it is generated in the SignaLink from the
audio stream. The KX3, K3/K3S VOX will work just as well as the "PTT"
from the SignaLink. Due to the single channel implementation in the
SignaLink, it cannot be used for panadapter applications.
So if you want a soundcard that can be used for both soundcard data
modes and a panadapter display, get a good external soundcard (look for
192kHz/24 bits). It will likely have a lower noise floor than the
SignaLink as well.
Soundcards that have been tested for Panadapter use are listed on the
www.telepostinc.com website. There are some there that are 96kHz/24 bit
which will not allow the full 192kHz width of the panadapter
applications, but that is usable if you only want to display up to 96kHz
of the band.
Of course, it you want a superior panadapter display, consider the P3
(for the K3/K3S) or the PX3 for the KX3.
73,
Don W3FPR
On 9/4/2017 7:11 PM, Barry wrote:
Use a Signalink USB to connect to your KX3 for
digital modes. It uses a USB connection to your computer and will key
the transmitter when you tell the software to transmit. The Signalink
uses an internal vox to know what to do and an acceptable sound card
that will take the radio's audio and feed it to your digital software.
You can plug a powered speaker into the Signalink's aux out and that
will allow you to change modes without need to do anything that remove
the mic and replace it with Signalink's mike cable. This allow greater
ease in mode changing, and you can continuously monitor you received
audio. Levels are set on the Signalink's front panel.
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