Building a second Radioberry but small as possible

[Joey G. (Bonehead)]

Hello all,

I'm about to embark on my second Radioberry build and was wondering if anyone was been successful getting it to run on a rpi zero 2 w.  I know it is less power but was able to get pihpsdr to run on it windowed with decent success.  Full screen, the audio starts being choppy.  What I want to accomplish is making a portable transceiver small as possible.  5w output is the target.  Wish list below

1. Something smaller than a rpi4 if possible but with the power to run pihpsdr or similar.

2. Small amp capible of outputting 5w after the filter board (Going to use a QRP Filter board I already have.  Tried the 5w preamp board but kept shutting down only after a few seconds.)

The rest I know how to do.  Just looking for ideas to make it small as possible to carry around. 

Thanks for any input.

73

Joe

K5BHD

[EA5JXP]

Here mi recently finished build, 55x106x200mm. Inside Juice + Radioberry + preamp boards; NanoPi M5 with 8GB DDR5 RAM + nvme drive; 8.4V DC-DC regulator for preamp supply and 2 fans for cooling. Can be smaller, even more if you choose to mount on Raspberry pi, but I don't care the size.

[Joey G.]

I might have to check out the juice version this time.  Very nice and clean build you have there.  Thanks for the feedback.

73

Joe

K5BHD

On Thu, Oct 9, 2025, 2:02 AM EA5JXP <ja.pere...@gmail.com> wrote:

Here mi recently finished build, 55x106x200mm. Inside Juice + Radioberry + preamp boards; NanoPi M5 with 8GB DDR5 RAM + nvme drive; 8.4V DC-DC regulator for preamp supply and 2 fans for cooling. Can be smaller, even more if you choose to mount on Raspberry pi, but I don't care the size.

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