Bilyan,
Thank you for the response and suggestions.?
I was ultimately able to determine that the issues I was having were related to the display, or rather the cabling for the display. I found that unplugging it made the problem go away. I was previously using standard ribbon cable with a choke but decided to try replacing the ribbon cable with CAT6 cable (twisted pairs with unique twist ratios each) and added ferrite beads to that. That seems to have resolved the problems I was having, even on the upper frequencies.?
I was not previously aware of the existence of feed-through capacitors, so thank you for mentioning those. I'm still having an RFI problem with another component in the system (a control board for the PA) which might be helped by such a component. I just ordered some Murata feed-through caps to try out. I got a few different values from 220pf to 22000pf, the latter of which seems to be perfect for attenuating the higher frequencies I'm dealing with according to the datasheet. I'm curious, though, if you would advise putting a series inductor with the feed-through cap and, if so, what value I should use to best attenuate frequencies between 10m and 6m.?
Thanks again for your support and info!
73,
Ed
