New to Raspberry Pi ? This article will help.

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Raspberry Pi for HAM Radio

Introduction Since 2012, the Raspberry Pi nano computer has become an increasingly important part of the DIY and « maker » community. The increase in power of the Raspberry Pi…

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The Raspberry Pi boards are quite useful.
And if you want a full history of the Pi, with loads of info, https://magpi.raspberrypi.org/issues has downloadable pdfs (97 at this point) of The MagPi, as well as quite a few special issues. Well worth the effort I think.
Just one point that may be worth looking into, make the file system read only as I had a telephone exchange running and it wore the SD card out with all the writing it did.