On Mon, Oct 21, 2019 at 01:04 AM, Mike_nano wrote:
What am I missing? Did I do something wrong?
yes, you did it wrong. There are two problems with your shields:
1) You're forgot to solder left top corner of shield. The distance to the ground is long, so the shield works as loop antenna and receiving noise.
2) the distance between shield and c26, c27 is too close. Short distance leads to capacitive coupling. You're needs to cut a small piece of left top corner of your shield in order to increase distance between shield and c26, c27.
Also, you didn't shown what is under the hood of the top shield. There is also may be problem with capacitive coupling due to short distance and missing soldering at some point. Also, there are needs two sections under shield for CH0. It's not clear from your photo if CH0 shield has two sections or one section.
