Topband: Digital mode spurious issues

[Mike Waters]

Bingo! The waterfall display was a wonderful invention, wasn't it? And I
don't even use SDR. (Yet.)

When I used to operate PSK31, I adjusted the audio levels with my own
signal displayed on the waterfall, and so it was easy to see when the input
from the sound card was too high. The spurs from AF overload are very easy
to see on the waterfall.

73, Mike
www.w0btu.com

On Mon, Dec 30, 2013 at 8:50 PM, JC N4IS <n4is at comcast.net> wrote:

>
> Using a SDR water fall it is easy to see the signal transitions and
> associate the trash with the main signal. I've seen several spoors every 10
> KHz almost 100KHz up and down 1838. This is a growing problem.
>