Re: How susceptible is the DRAWS board to RFI? Metal Case required?

Jim Erickson

I’ll share this image, a metal case from amazon that I customized to accommodate the 2 mini-din and sma connector.  Temperature sits around 55-60 with the fan which is using the accessory pins on the draws hat.  I’ve been using this daily for 6+ months with no temperature issues or RFI issues.

VA7SHG - Phone

On Jul 28, 2020, at 10:06, Kevin K. - N7KJK <kkutzera@...> wrote:

I share this image of a custom case which includes dual fans.. I also wired two AAA batteries to the clock backup.

I used a gpio riser to make room between the PI and the DRAWS for heat syncs and a center fan.  Simply bought two PI stack style cases and modified one for the DRAWS connects.

I've been running it for a couple days now as APRS tracker with no temp issues.


On Tue, Jul 28, 2020, 6:51 AM Bryan Hoyer <bhhoyer@...> wrote:
Acrylic cases are suitable with a couple of caveats:

Be mindful of Temperature rise, probably not suitable for Pi4

One customer had RFI issues and fixed them with a grounded metal plate on top of their acrylic case

C4Labs makes acrylic cases for DRAWS both versions 1 with the SMA on the side and version 2 with the SMA on the end. They are working on a new version for the current rev, which has the Barrel Connector for DC.

Bryan K7UDR

On Jul 28, 2020, at 6:33 AM, Charlie Hein <chein@...> wrote:

Just askin'.  Is an acrylic case suitable, or should the Pi and DRAWS be housed in a metal case to help prevent RFI?



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