QCX CW Transceiver Kit

Last weekend I finished my new transceiver for my SOTA (Summit On The Air) activations. This is a single-band TRX with power of 2 - 3 W by QRP Labs. I chose to build one for my favourite HF band 7 MHz.

 

 

I have performed a quick measurement of the output power measuring the pak-to-peak voltage across a 50-Ohm dummy load. The results can be seen in the following figure. From the practical point of view when the transceiver is used on battery power, the output power is 2 - 3 W, so a good antenna is needed. :)