Locked Re: problem with WSJTX receive

Robert Lorenzini

On 6/9/2020 7:00 PM, Jim Shorney wrote:
You get what you pay for...


Maybe it sould be "you get what you deserve."

Bob - wd6dod
sorry Jim

On Tue, 9 Jun 2020 18:52:13 -0400
careyfisher@... wrote:

OMG, who would pay that much for a sound card?!?!?!

On Tue, Jun 9, 2020 at 6:46 PM Frank Donovan <donovanf@...> wrote:

Hi Al,

One of the best external sound cards for FT8 and other digital modes is
the Tascam US-100.

Although no longer manufactured, its widely available on eBay



*From: *"Al Rusnak via groups.io" <arusnak@...>
*To: *main@WSJTX.groups.io
*Sent: *Tuesday, June 9, 2020 10:22:08 PM
*Subject: *Re: [WSJTX] problem with WSJTX receive

What are some of the better sound cards?  Great to know what not to get,
but does not provide sufficient info to make a decision on another device.




*From:* main@WSJTX.groups.io [mailto:main@WSJTX.groups.io] *On Behalf Of *Martin
*Sent:* Tuesday, June 9, 2020 12:04 PM
*To:* main@WSJTX.groups.io
*Subject:* Re: [WSJTX] problem with WSJTX receive

The only comment I'd add to Jim's worthy document is don't buy or use a
SignaLink-USB data interface device!

The circuit design of the SL-USB has certain well-known shortcomings that
result in the LF noise performance of the device, up to a few 100Hz, being
typically 20dB worse than even a cheap USB audio dongle.  This might not
seem to be of any great consequence but it can have a significant effect
when WSJT-X is trying to decode a weak-ish signal from a DX station
operating in 'Fox' mode and transmitting typically around 300-350Hz on the
waterfall.  The excess LF noise of the SL-USB can easily mask a Fox's weak
signal thus making it impossible for you to work him.

There are many better, and cheaper, audio soundcard solutions than the
SL-USB (in my opinion, of course!).

Martin G0HDB




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