Showing posts with label sm0vpo. Show all posts
Showing posts with label sm0vpo. Show all posts

26 Jan 2015

QRP 5W CW transmitter from SM0VPO

Many years ago Harry SM0VPO worked at Pye Telecom. I had no idea back then that he was such a prolific and good designer.  This is his design for a simple HF 5W CW transmitter. His website has loads of great ideas.

See http://www.qsl.net/qrp/tx/5wtx.htm .

24 Nov 2009

Another oscillator calculator

Harry Lythall SM0VPO has a most interesting site full of ideas. Among the useful stuff is an oscillator calculator which allows you to work out values of L and C to make an oscillator that Harry claims always works. The circuit produces about 20mW.

This is the link http://web.telia.com/~u85920178/blocks/osc7m00.htm