(tr)uSDX

If you don't have a (tr)uSDX yet, stop reading this and go buy one right now.  Seriously, this little radio is packed with features for such a tiny little device.  You can buy them as a kit or you can purchase one already built.  

Connecting a Kenwood style hand mic

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Connecting an iPhone for FT8 and WSPR

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Frequency Calibration

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Battery Box

If you own a 3D printer, you should check out this project for a nice all in one device.