20mhz RF circuit help me

If you are looking for a receiver try this website:YO3DAC - Homebrew RF Circuit Design Ideas

In the March 2001 QST Magazine is and article for the "Warbler" transceiver. It is a fixed frequency unit using 3.579Mhz colorburst crystals for its RF filter and operating frequency. Its RF pass band is based on the filter. There is no tuning for input frequency. This unit is designed to use standard crystals that happen to fall within international ham bands.

The same concept could be used to create a single frequency transceiver at almost any frequency.