Here are some pictures illustrating the build. I will share a video explaining each step of the build.
![](https://cdn.hackaday.io/images/8753701693767646101.jpg)
The back enclosure has Airspy, Fan, battery and BMS system
![](https://cdn.hackaday.io/images/6351291693767664625.jpg)
The font panel has LCD, Raspberry Pi, SD Card, and keypad controllers (Behind the black panel).
![](https://cdn.hackaday.io/images/3755011693767679005.jpg)
Airspy HF+ is an excellent device to explore the HF signals. And a BNC extension, makes it easy to secure the Airspy, and to mount common antennas.
![](https://cdn.hackaday.io/images/882201693767696908.jpg)
![](https://cdn.hackaday.io/images/5702151693767708503.jpg)
To make the device slim, I stripped off all the extra stuff from this raspberry pi 4. But you can build without removing anything. Only thing you will need is to increase the enclosure height.
![](https://cdn.hackaday.io/images/3861031693767723524.jpg)
I am using 5V fan for ventilation. TODO add PWM control to this fan. right now, its always on, and has some noise.
![](https://cdn.hackaday.io/images/6357501693767732483.jpg)
Finally, enclosure is secured by some basic screws about 1.5 inch long. I would love to add some brass screw inserts
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