On Wednesday 26 March 2008 14:38, Levente wrote: > In the last few months I've been busy with my HF radio design. So > far, I have schematics. There are lot's of HAMs on this list, so you > might want to take a look. > > I have created a blog on my server, so if you have comment, question, > you can write it there not loading this list. > > The blog is at > http://logonex.eu/blog/?cat=1 > > The project itself is at > http://logonex.eu/~leva/projects/hf_rig/
Perhaps I missed something, but it looks to me that your filters are in the wrong place. I started to build one many years ago, using the phasing method. If you have components that don't drift, the phasing method is superior to the filter method. That's phasing in both the receiver and transmitter. Most of the 40's and 50's phasing rigs had terrible phase shift networks, and drift problems with tubes. I didn't finish the project, but for the portion I did finish I was actually getting performance that is just a wild dream for filter rigs. _______________________________________________ geda-dev mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-dev
