开云体育

When I was working with my transceiver in ~106F temperatures last month, there were some obvious heat issues with the RPI with multiple applications loaded.? I bumped into the thermal throttling threshold a few times.? Even at home it's running in the 70s or 80s depending on what's running and I run it all day lately.? Anyways, I figured that I'd crack mine open and try to mitigate that a bit.? I typically run my RPIs in standalone cases with active cooling of some sort.? Probably not wise to place a fan right next to the transceiver.? I found that I was able to apply the RPI 4's 'OEM' set of heat sinks with the room afforded us between the PI and the transceiver board.? I thought that I was going to have to mill off some of the aluminum material on the sink for the CPU because of the crystal directly below it but there's about ten thousandths between the heat sink and the xtal.? The default heat sinks appear to have decreased the average temps by about ten degrees F.? Hopefully, I won't have to try this out in those high temps again but with an external fan blowing in from the side these heat sinks may help mitigate the heat a bit more.? I have a DC blower fan that I'll try at some point.? Which reminds me, I need to print or build a battery holder for the back.? Anyone know of any STLs for that?
I figured that I'd share.? Just an FYI.

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We a collection of battery boxes, fan folders, stands, etc on the sBitx Discord server. ?

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Kevin,
you don't have to reinvent the wheel, it was invented a long time ago. The cooling of the RPi is also known in the sbitx device as well as in the device housing currently purchased. All you have to do is look at the pictures in the Emailed Photos album.
You will also get many hits for the keyword cooling the RPi or something similar, because many people have implemented it in different ways. Some have raised the RPi to accommodate more cooling surface. Some people use a fan to cool the back of the RPi. Others put a fan outside the house.

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Gyula HA3HZ