QDX transceiver

This tiny digital transceiver amazes me. It is about the size of a pack of cards.  

In my case I added a number of suitably rated diodes to drop the supply voltage so the power output is probably about 3W, at most, on 10m. 

Despite this I have been copied all over the planet on 10m QRP FT8 with a simple, low, end-fed antenna. It is all you need really if you are only interested in digital HF. It is available as a kit or ready built. You can choose a version covering the lower or higher HF bands. There are also single band versions at a slightly lower price. 

Excellent products and excellent value. I am highly impressed.

See https://qrp-labs.com/qdx.html.