Locked Re: USB Audio CODEC

Ria, N2RJ

I got a Flex in 2016 so I've not had to use a sound card interface
since then. Good to know that Tigertronics has resolved the issue.


On Sun, Dec 27, 2020 at 8:57 PM Bob McGraw - K4TAX <rmcgraw@...> wrote:

Later models have that resolved.

Bob, K4TAX

On Dec 27, 2020, at 7:58 PM, Ria, N2RJ <rjairam@...> wrote:

I had one and the noise floor was very high. There are mods but I’ve never tried it.

On Sun, Dec 27, 2020 at 7:53 PM Don Roden <donroden@...> wrote:

Maybe for the 756Pro, but for LOTS of radios, the SignaLink represents
a simple solution for FT8. Some rigs use CAT to turn on the front
microphone which defeats the rear digital mode audio. Some do .....
Some dont.

Quoting "D. Scott MacKenzie" <kb0fhp@...>:

The CAT for the 756 Pro does PTT. At worse, you do VOX. No reason to by a

From: main@WSJTX.groups.io <main@WSJTX.groups.io> On Behalf Of Kai-KE4PT
Sent: Sunday, December 27, 2020 4:27 PM
To: main@WSJTX.groups.io
Subject: Re: [WSJTX] USB Audio CODEC

Just be sure that you have a way of doing PTT. The Signalink is designed to
do PTT, an inexpensive USB sound card might not support PTT. Download manual
for Signalink USB to see what I mean. The Signalink require just one
connection to the computer (a USB connection) and one cable to the 756 Pro.
Kindest regards,
Kai, KE4PT

On 12/27/2020 12:40, neil_zampella wrote:

You don't need to 'invest' in a Signalink, you'd probably do better with an
inexpensive USB soundcard. However you haven't said how you're interfacing
the rig with the computer, that would help with advice. That said, have
you looked at the interface cables from xggcomms.com, they're based in the

Neil, KN3ILZ

On 12/27/2020 10:31 AM, kelvin348@...
<mailto:kelvin348@...> via groups.io wrote:

Hi Roger,
Thanks for the quick reply.
I'm using Windows 10.
I don't have any drivers to install. I am not sure if there is are drivers
for the 756 Pro, it might be a bit old.
I have an IC-R2500 receiver which when I turn it on shows a USB Audio Codec
in the Device manager, however as soon as I turn it off it disappears.
Do you think I might need to invest in a Signalink?

-----Original Message-----
From: main@WSJTX.groups.io <mailto:main@WSJTX.groups.io>
[mailto:main@WSJTX.groups.io] On Behalf Of
groups@... <mailto:groups@...>
Sent: 27 December 2020 15:57
To: main@WSJTX.groups.io <mailto:main@WSJTX.groups.io>
Subject: Re: [WSJTX] USB Audio CODEC

On 27/12/2020 15:05, kelvin348@...
<mailto:kelvin348@...> via groups.io wrote:


I thought it is about time I tried out Digital Modes.

I'm trying to set up WSJTX for the first time.

I'm using an Icom IC-756 Pro and HRD. I have tested the CAT connection
and transmit and all ok.

My problem appears to be setting up the sound card.

In device manager I don't have USB Audio codec in the drop down list
for the sound card.

My question is, can VB Cable be used instead of USB Audio cable?

Any other suggestions would be most welcome.

Thanks in advance.

Kelvin 2E0HJE


You don't say what operating system you are using but I assume it is
windows? Have you followed the manufacturer's instructions to download and
install the USB audio driver?


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