To be clear, the SLUSB VOX is the weak point if it is used for PTT. It
is not reliable... this has little to do with the radio of any brand.
Rick
PS Congrats on the 160M VK0EK QSO, I know what an effort that was, I saw
your call on DXA3 just after.
On 4/10/2016 10:58 PM, Jim Brown wrote:
On Sun,4/10/2016 10:28 PM, Rick WA6NHC wrote:
While your decode level is admirable, using the SLUSB VOX to trigger
the PTT is less than reliable.
I have no experience with the Signal Link unit, but I use AFSK RTTY,
JT65, JT9, ISCAT, and FSK441, making thousands of QSOs in a weekend
contest. I've never used anything but VOX for any voice or digital
mode, whether I was using the sound card built into my laptop or a
nice USB sound card. It makes life MUCH simpler, and it works quite
reliably if you set it up well.
Like with any VOX setup, you start with high VOX sensitivity while
you're getting modulation levels right, then set the VOX for reliable
operation. There are detailed setup instructions for audio levels (but
not for setting VOX) in my review of USB sound cards at
k9yc.com/publish.htm
73, Jim K9YC
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