9 Mar 2026

uSDX Ultra

This transceiver is now some years old and I assume it is still being made. In the UK it is available from AliExpress for just over £85, which is very low for a QRP handheld covering many of the HF bands. In a tiny handheld form factor is amazing value. It is sold as a 5W radio, but 3-4W is more common.

There have been reports of bad audio unless the settings are adjusted but I have no idea if this has been improved in later models. 

On the face of it, it looks a bargain, but I have not used one.

I would imagine you would get stung for duty.



at 06:58
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1 comment:

ftg said...

I'd expect the audio quality to be passable at best, due to the uSDX construction stretching the atmega328p at and sometimes beyond it's absolute limits.
But it's a remarkably simple and cheap architechture without any high-Q filters.

Tue Mar 10, 10:49:00 am GMT

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