Re: Different scan images when USB connected
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Dragan and Jim, Thanks for the input. I'll look for a better USB cable other than the ones that came with the SA. I have some ferrite cores so I took one and wrapped a few loops around it at the SA micro USB end. Seems to have worked a little.?I don't have a USB isolator so I'll see what I can find on the InterWebs. More tests foreseen.? Thanks again! *** Walt *** WA7SDY ***
On Tuesday, October 6, 2020, 07:19:10 PM PDT, Jim Shorney <jshorney@...> wrote:
That is the simplest answer. RF will go where it wants to go. What you have there is a very unbalanced antenna system. A USB isolator may help. 73 -Jim NU0C On Tue, 06 Oct 2020 07:14:57 -0700 "Erik Kaashoek" <erik@...> wrote: > Oh, you are using the telescopic antenna at the input and then you connect a USB cable. > The USB cable is acting as part of the antenna and is picking up a huge amount of noise. > > The same thing happens when you have a signal generator and a tinySA and both are connected to the computer with USB and the cable between the generator and the tinySA is not the lowest resistance between the two devices (because of bad cable or bad contact) |
Walt WA7SDY