Dear all, I'm thinking about the adding low pass filters to the output of all oscillators. The goal is to filter the square wave of the clock generator. I came up with this mixer solution. Using a JFE

Would that be a good solution to make the IF amplifier tuned? Like this? Also, change the transistors to BFS17P, this is more suited to RF. 73s de HA5OGL

So why don't we create a new design? Slightly more expensive, but a good one. My thoughts: 1. Tuned IFs 2. Filter the output of the LOs 3. Push-pull preamplifier (https://www.sv1afn.com/j310preamp.htm

"Henning Weddig via Groups.Io" <hweddig=aol.com@groups.io> wrote: Yes... yes. Basically, I want to have a cheap radio, that have a reasonable good receiver, and its transmitter meets the FCC and Europ

"Jerry Gaffke via Groups.Io" <jgaffke=yahoo.com@groups.io> wrote: :-) Yes, but if we didn't amplify unwanted signals, the XTAL filter has easier task. :-) Okay, but the harmonics can cause unwanted pr