Reflection Technology

The Flea – a minimalist CW transceiver

Here’s an amazingly simple 1W morse code transceiver in the tradition
of the Pixie but with much more output power and a narrower bandwidth
receiver (the oscillator crystal forms part of the receive input
filter):br /br /http://ea3fxf.googlepages.com/fleabr /br /The xtal is in the receive path so the bandwidth is quite narrow and will stop broadcast interference. A PCB layout is included. The page is just a summary – have a look at the linked .DOC file for the full article.