OK. I've been reading the ARRL Handbook (2008) and the "Experitmental Methods in RF Design" and sites around the web - including the links that Bertus posted at the top of the forum.
Every receiver example circuit I've seen uses a variable capacitor.
Aside from the fact that the electronics supply sites don't sell them anymore, I would prefer to build and learn about newer circuit designs - I would like to be able to build things from components from the "grab bag" parts offered.
Any suggestions (books, sites)?
Every receiver example circuit I've seen uses a variable capacitor.
Aside from the fact that the electronics supply sites don't sell them anymore, I would prefer to build and learn about newer circuit designs - I would like to be able to build things from components from the "grab bag" parts offered.
Any suggestions (books, sites)?