[hpsdr] HERMES BOARD question about FD#

[N4IS]

Hi Guys

 

 

I'm working in housing my HERMES board in a tin-plated box, I like to shield
it very well. 

 

There are several dots on the PCB named FD1 to FD6 very close to the holes
where I need to fix the standoffs.

 

What is these FD1 FD2 FD# ? The 4-40 wash is grounding them. Would this be a
problem? I don't know what is connected to these pads.

 

Regards

JC

N4IS

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